diff --git a/.gitignore b/.gitignore
index 6b192a3..20a5d2d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -33,8 +33,6 @@ calc-static
 calc.1
 calc.spec
 calc.usage
-calcerr.c
-calcerr.h
 charbit.h
 chatbit
 chk_c
@@ -55,6 +53,8 @@ custom/libcustcalc*
 debug.out
 endian
 endian_calc.h
+errcode
+errsym.h
 fposval
 fposval.h
 func.show
diff --git a/CHANGES b/CHANGES
index 30aab81..08b8b41 100644
--- a/CHANGES
+++ b/CHANGES
@@ -229,6 +229,47 @@ The following are the changes from calc version 2.14.3.5 to date:
     of the calc error code system as well as libcalc interface
     where applicable.
 
+    Changed #define E_USERDEF to #define E__USERDEF.
+
+    Removed use of E_USERDEF, E__BASE, E__COUNT, and E__HIGHEST
+    from custom/c_sysinfo because the c_sysinfo is just a demo
+    and this will simplify the custom/Makefile.
+
+    The include file calcerr.h is now the errsym.h include file.
+    The calcerr.tbl has been replaced by errtbl.c and errtbl.h.
+
+    The calcerr_c.awk, calcerr_c.sed, calcerr_h.awk, and
+    calcerr_h.sed files are now obsolete and have been removed.
+    The calcerr.c and calcerr.h now obsolete and are no longer built.
+
+    The calc computation error codes, symbols and messages are now in
+    a error_table[] array of struct errtbl.
+
+    An E_STRING is a string corresponds to an error code #define.
+    For example, the E_STRING for the calc error E_STRCAT,
+    is the string "E_STRING".  An E_STRING must now match
+    the regular expression: "^E_[A-Z0-9_]+$".
+
+    The old array error_table[] of error message strings has been
+    replaced by a new error_table[] array of struct errtbl.  The struct
+    errtbl array holds calc errnum error codes, the related E_STRING
+    symbol as a string, and the original related error message.
+    To add new computation error codes, add them near the bottom of the
+    error_table[] array, just before the NULL entry.
+
+    The ./errcode utility, when run, will verify the consistency of
+    the error_table[] array.
+
+    The Makefile uses ./errcode -e to generate the contents of
+    help/errorcodes file.  The help errorcodes now prints
+    information from the new cstruct errtbl error_table[] array.
+
+    The help/errorcodes.hdr and help/errorcodes.sed files are
+    now obsolete and have been removed.
+
+    The Makefile uses ./errcode -d to generate the contents of the
+    errsym.h include file.
+
 
 The following are the changes from calc version 2.14.3.4 to 2.14.3.5:
 
diff --git a/Makefile b/Makefile
index 690b00d..45abb8b 100644
--- a/Makefile
+++ b/Makefile
@@ -127,7 +127,7 @@ V=@:
 #
 LIBSRC= addop.c assocfunc.c blkcpy.c block.c byteswap.c \
 	codegen.c comfunc.c commath.c config.c const.c custom.c \
-	file.c func.c hash.c help.c hist.c input.c jump.c label.c \
+	errtbl.c file.c func.c hash.c help.c hist.c input.c jump.c label.c \
 	lib_calc.c lib_util.c listfunc.c matfunc.c math_error.c \
 	obj.c opcodes.c pix.c poly.c prime.c qfunc.c qio.c \
 	qmath.c qmod.c qtrans.c quickhash.c seed.c sha1.c size.c \
@@ -136,12 +136,12 @@ LIBSRC= addop.c assocfunc.c blkcpy.c block.c byteswap.c \
 
 # the object files which are built into a math link library
 #
-# There MUST be a .o for every .c in LIBSRC plus calcerr.o
+# There MUST be a .o for every .c in LIBSRC
 # which is built via this Makefile.
 #
-LIBOBJS= addop.o assocfunc.o blkcpy.o block.o byteswap.o calcerr.o \
+LIBOBJS= addop.o assocfunc.o blkcpy.o block.o byteswap.o \
 	codegen.o comfunc.o commath.o config.o const.o custom.o \
-	file.o func.o hash.o help.o hist.o input.o jump.o label.o \
+	errtbl.o file.o func.o hash.o help.o hist.o input.o jump.o label.o \
 	lib_calc.o lib_util.o listfunc.o matfunc.o math_error.o \
 	obj.o opcodes.o pix.o poly.o prime.o qfunc.o qio.o \
 	qmath.o qmod.o qtrans.o quickhash.o seed.o sha1.o size.o \
@@ -163,14 +163,14 @@ CALCOBJS= calc.o
 # these .h files are needed to build the math link library
 #
 LIB_H_SRC= alloc.h banned.h blkcpy.h block.h bool.h byteswap.h calc.h \
-	cmath.h config.h custom.h decl.h file.h func.h hash.h hist.h \
-	int.h jump.h label.h lib_util.h lib_calc.h nametype.h \
+	cmath.h config.h custom.h decl.h errtbl.h file.h func.h hash.h \
+	hist.h int.h jump.h label.h lib_util.h lib_calc.h nametype.h \
 	opcodes.h prime.h qmath.h sha1.h str.h strl.h \
 	symbol.h token.h value.h zmath.h zrand.h zrandom.h attribute.h
 
 # we build these .h files during the make
 #
-BUILD_H_SRC= align32.h args.h calcerr.h conf.h endian_calc.h \
+BUILD_H_SRC= align32.h args.h conf.h endian_calc.h errsym.h \
 	fposval.h have_ban_pragma.h have_const.h have_fgetsetpos.h \
 	have_fpos_pos.h have_getpgid.h have_getprid.h have_getsid.h \
 	have_gettime.h have_memmv.h have_newstr.h have_offscl.h \
@@ -184,7 +184,7 @@ BUILD_H_SRC= align32.h args.h calcerr.h conf.h endian_calc.h \
 
 # we build these .c files during the make
 #
-BUILD_C_SRC= calcerr.c
+BUILD_C_SRC=
 
 # these .c files may be used in the process of building BUILD_H_SRC
 #
@@ -201,8 +201,7 @@ UTIL_C_SRC= align32.c endian.c longbits.c have_newstr.c have_uid_t.c \
 # these awk and sed tools are used in the process of building BUILD_H_SRC
 # and BUILD_C_SRC
 #
-UTIL_MISC_SRC= calcerr_h.sed calcerr_h.awk calcerr_c.sed calcerr_c.awk \
-	calcerr.tbl check.awk fposval.h.def
+UTIL_MISC_SRC= fposval.h.def
 
 # these .o files may get built in the process of building BUILD_H_SRC
 #
@@ -293,7 +292,7 @@ CALC_STATIC_LIBS= libcalc.a libcustcalc.a
 CALC_DYNAMIC_LIBS= libcalc${LIB_EXT_VERSION} libcustcalc${LIB_EXT_VERSION}
 SYM_DYNAMIC_LIBS= libcalc${LIB_EXT} libcustcalc${LIB_EXT} \
 	libcalc${LIB_EXT_VER} libcustcalc${LIB_EXT_VER}
-EARLY_TARGETS= hsrc .hsrc custom/.all custom/Makefile
+EARLY_TARGETS= errsym.h hsrc .hsrc custom/.all custom/Makefile
 
 # list of sample programs that need to be built to satisfy sample rule
 #
@@ -2172,25 +2171,10 @@ args.h: have_stdvs.c have_varvs.c have_string.h have_unistd.h \
 	    ${TRUE}; \
 	fi
 
-calcerr.h: calcerr.tbl calcerr_h.sed calcerr_h.awk ${MK_SET}
-	${Q} ${RM} -f calerr.h
+errsym.h: errcode${EXT}
+	${Q} ${RM} -f $@
 	${H} echo 'forming $@'
-	${Q} echo '/*' > $@
-	${Q} echo ' * DO NOT EDIT' >> $@
-	${Q} echo ' *' >> $@
-	${Q} echo ' * generated by calcerr.tbl via Makefile' >> $@
-	${Q} echo ' */' >> $@
-	${Q} echo '' >> $@
-	${Q} echo '' >> $@
-	${Q} echo '#if !defined(CALC_CALCERR_H)' >> $@
-	${Q} echo '#define CALC_CALCERR_H' >> $@
-	${Q} echo '' >> $@
-	${Q} echo '' >> $@
-	${Q} ${SED} -f calcerr_h.sed < calcerr.tbl | \
-	    ${AWK} -f calcerr_h.awk >> $@
-	${Q} echo '' >> $@
-	${Q} echo '' >> $@
-	${Q} echo '#endif /* !CALC_CALCERR_H */' >> $@
+	./errcode${EXT} -d > $@
 	${H} echo '$@ formed'
 	-@if [ -z "${Q}" ]; then \
 	    echo ''; \
@@ -2202,27 +2186,9 @@ calcerr.h: calcerr.tbl calcerr_h.sed calcerr_h.awk ${MK_SET}
 	    ${TRUE}; \
 	fi
 
-calcerr.c: calcerr.tbl calcerr_c.sed calcerr_c.awk ${MK_SET}
-	${Q} ${RM} -f calerr.c
-	${H} echo 'forming $@'
-	${Q} echo '/*' > $@
-	${Q} echo ' * DO NOT EDIT' >> $@
-	${Q} echo ' *' >> $@
-	${Q} echo ' * generated by calcerr.tbl via Makefile' >> $@
-	${Q} echo ' */' >> $@
-	${Q} echo '' >> $@
-	${Q} ${SED} -f calcerr_c.sed < calcerr.tbl | \
-	    ${AWK} -f calcerr_c.awk >> $@
-	${H} echo '$@ formed'
-	-@if [ -z "${Q}" ]; then \
-	    echo ''; \
-	    echo '=-=-= start of $@ =-=-='; \
-	    ${CAT} $@; \
-	    echo '=-=-= end of $@ =-=-='; \
-	    echo ''; \
-	else \
-	    ${TRUE}; \
-	fi
+errcode${EXT}: errtbl.c errtbl.h have_const.h ${MK_SET}
+	${RM} -f $@
+	${LCC} ${ICFLAGS} ${ILDFLAGS} -DERRCODE_SRC errtbl.c -o $@
 
 have_unused.h: have_unused.c have_stdlib.h have_ban_pragma.h \
 	       ${MK_SET}
@@ -2467,7 +2433,7 @@ help/builtin: help/Makefile \
 	${V} echo '=-=-=-=-= ${MAKE_FILE} end of $@ rule =-=-=-=-='
 
 help/errorcodes: help/Makefile \
-	      calcerr.h help/errorcodes.hdr help/errorcodes.sed
+	      errcode${EXT}
 	${V} echo '=-=-=-=-= ${MAKE_FILE} start of $@ rule =-=-=-=-='
 	${V} echo '=-=-=-=-= Invoking builtin rule for help =-=-=-=-='
 	${RM} -f $@
@@ -3334,6 +3300,7 @@ olduninstall:
 	${RM} -f inst_files
 	${RM} -f ${CALC_INCDIR}/calcerr.c
 	${RM} -f ${CALC_INCDIR}/have_fgetsetpos.h
+	${RM} -f ${CALC_INCDIR}/calcerr.h
 	${RM} -f -v Makefile.simple Makefile.simple.bak
 	${RM} -f -v custom/Makefile.simple custom/Makefile.simple.bak
 
@@ -3369,6 +3336,7 @@ clean:
 	${RM} -f endian.h stdarg.h libcalcerr.a cal/obj help/obj
 	${RM} -f have_vs.c std_arg.h try_stdarg.c fnvhash.c
 	${RM} -f have_malloc.h math_error.h string.h string.c
+	${RM} -f calcerr.c calcerr.h calcerr.o
 	${V} echo '=-=-=-=-= ${MAKE_FILE} end of $@ rule =-=-=-=-='
 
 clobber: clean
@@ -4023,12 +3991,12 @@ addop.o: block.h
 addop.o: bool.h
 addop.o: byteswap.h
 addop.o: calc.h
-addop.o: calcerr.h
 addop.o: charbit.h
 addop.o: cmath.h
 addop.o: config.h
 addop.o: decl.h
 addop.o: endian_calc.h
+addop.o: errsym.h
 addop.o: func.h
 addop.o: hash.h
 addop.o: have_ban_pragma.h
@@ -4064,12 +4032,12 @@ assocfunc.o: banned.h
 assocfunc.o: block.h
 assocfunc.o: bool.h
 assocfunc.o: byteswap.h
-assocfunc.o: calcerr.h
 assocfunc.o: charbit.h
 assocfunc.o: cmath.h
 assocfunc.o: config.h
 assocfunc.o: decl.h
 assocfunc.o: endian_calc.h
+assocfunc.o: errsym.h
 assocfunc.o: hash.h
 assocfunc.o: have_ban_pragma.h
 assocfunc.o: have_const.h
@@ -4095,12 +4063,12 @@ blkcpy.o: block.h
 blkcpy.o: bool.h
 blkcpy.o: byteswap.h
 blkcpy.o: calc.h
-blkcpy.o: calcerr.h
 blkcpy.o: charbit.h
 blkcpy.o: cmath.h
 blkcpy.o: config.h
 blkcpy.o: decl.h
 blkcpy.o: endian_calc.h
+blkcpy.o: errsym.h
 blkcpy.o: file.h
 blkcpy.o: hash.h
 blkcpy.o: have_ban_pragma.h
@@ -4126,12 +4094,12 @@ block.o: block.c
 block.o: block.h
 block.o: bool.h
 block.o: byteswap.h
-block.o: calcerr.h
 block.o: charbit.h
 block.o: cmath.h
 block.o: config.h
 block.o: decl.h
 block.o: endian_calc.h
+block.o: errsym.h
 block.o: hash.h
 block.o: have_ban_pragma.h
 block.o: have_const.h
@@ -4178,7 +4146,6 @@ calc.o: bool.h
 calc.o: byteswap.h
 calc.o: calc.c
 calc.o: calc.h
-calc.o: calcerr.h
 calc.o: charbit.h
 calc.o: cmath.h
 calc.o: conf.h
@@ -4186,6 +4153,7 @@ calc.o: config.h
 calc.o: custom.h
 calc.o: decl.h
 calc.o: endian_calc.h
+calc.o: errsym.h
 calc.o: func.h
 calc.o: hash.h
 calc.o: have_ban_pragma.h
@@ -4216,11 +4184,6 @@ calc.o: symbol.h
 calc.o: token.h
 calc.o: value.h
 calc.o: zmath.h
-calcerr.o: banned.h
-calcerr.o: calcerr.c
-calcerr.o: calcerr.h
-calcerr.o: have_ban_pragma.h
-calcerr.o: have_const.h
 charbit.o: banned.h
 charbit.o: charbit.c
 charbit.o: have_ban_pragma.h
@@ -4239,7 +4202,6 @@ codegen.o: block.h
 codegen.o: bool.h
 codegen.o: byteswap.h
 codegen.o: calc.h
-codegen.o: calcerr.h
 codegen.o: charbit.h
 codegen.o: cmath.h
 codegen.o: codegen.c
@@ -4247,6 +4209,7 @@ codegen.o: conf.h
 codegen.o: config.h
 codegen.o: decl.h
 codegen.o: endian_calc.h
+codegen.o: errsym.h
 codegen.o: func.h
 codegen.o: hash.h
 codegen.o: have_ban_pragma.h
@@ -4324,7 +4287,6 @@ config.o: block.h
 config.o: bool.h
 config.o: byteswap.h
 config.o: calc.h
-config.o: calcerr.h
 config.o: charbit.h
 config.o: cmath.h
 config.o: config.c
@@ -4332,6 +4294,7 @@ config.o: config.h
 config.o: custom.h
 config.o: decl.h
 config.o: endian_calc.h
+config.o: errsym.h
 config.o: hash.h
 config.o: have_ban_pragma.h
 config.o: have_const.h
@@ -4362,13 +4325,13 @@ const.o: block.h
 const.o: bool.h
 const.o: byteswap.h
 const.o: calc.h
-const.o: calcerr.h
 const.o: charbit.h
 const.o: cmath.h
 const.o: config.h
 const.o: const.c
 const.o: decl.h
 const.o: endian_calc.h
+const.o: errsym.h
 const.o: hash.h
 const.o: have_ban_pragma.h
 const.o: have_const.h
@@ -4392,7 +4355,6 @@ custom.o: block.h
 custom.o: bool.h
 custom.o: byteswap.h
 custom.o: calc.h
-custom.o: calcerr.h
 custom.o: charbit.h
 custom.o: cmath.h
 custom.o: config.h
@@ -4400,6 +4362,7 @@ custom.o: custom.c
 custom.o: custom.h
 custom.o: decl.h
 custom.o: endian_calc.h
+custom.o: errsym.h
 custom.o: hash.h
 custom.o: have_ban_pragma.h
 custom.o: have_const.h
@@ -4421,6 +4384,10 @@ endian.o: endian.c
 endian.o: have_ban_pragma.h
 endian.o: have_stdlib.h
 endian.o: have_unistd.h
+errtbl.o: decl.h
+errtbl.o: errtbl.c
+errtbl.o: errtbl.h
+errtbl.o: have_const.h
 file.o: alloc.h
 file.o: attribute.h
 file.o: banned.h
@@ -4428,12 +4395,12 @@ file.o: block.h
 file.o: bool.h
 file.o: byteswap.h
 file.o: calc.h
-file.o: calcerr.h
 file.o: charbit.h
 file.o: cmath.h
 file.o: config.h
 file.o: decl.h
 file.o: endian_calc.h
+file.o: errsym.h
 file.o: file.c
 file.o: file.h
 file.o: fposval.h
@@ -4490,13 +4457,14 @@ func.o: block.h
 func.o: bool.h
 func.o: byteswap.h
 func.o: calc.h
-func.o: calcerr.h
 func.o: charbit.h
 func.o: cmath.h
 func.o: config.h
 func.o: custom.h
 func.o: decl.h
 func.o: endian_calc.h
+func.o: errsym.h
+func.o: errtbl.h
 func.o: file.h
 func.o: func.c
 func.o: func.h
@@ -4539,12 +4507,12 @@ hash.o: block.h
 hash.o: bool.h
 hash.o: byteswap.h
 hash.o: calc.h
-hash.o: calcerr.h
 hash.o: charbit.h
 hash.o: cmath.h
 hash.o: config.h
 hash.o: decl.h
 hash.o: endian_calc.h
+hash.o: errsym.h
 hash.o: hash.c
 hash.o: hash.h
 hash.o: have_ban_pragma.h
@@ -4667,13 +4635,13 @@ help.o: block.h
 help.o: bool.h
 help.o: byteswap.h
 help.o: calc.h
-help.o: calcerr.h
 help.o: charbit.h
 help.o: cmath.h
 help.o: conf.h
 help.o: config.h
 help.o: decl.h
 help.o: endian_calc.h
+help.o: errsym.h
 help.o: hash.h
 help.o: have_ban_pragma.h
 help.o: have_const.h
@@ -4700,12 +4668,12 @@ hist.o: block.h
 hist.o: bool.h
 hist.o: byteswap.h
 hist.o: calc.h
-hist.o: calcerr.h
 hist.o: charbit.h
 hist.o: cmath.h
 hist.o: config.h
 hist.o: decl.h
 hist.o: endian_calc.h
+hist.o: errsym.h
 hist.o: hash.h
 hist.o: have_ban_pragma.h
 hist.o: have_const.h
@@ -4738,13 +4706,13 @@ input.o: block.h
 input.o: bool.h
 input.o: byteswap.h
 input.o: calc.h
-input.o: calcerr.h
 input.o: charbit.h
 input.o: cmath.h
 input.o: conf.h
 input.o: config.h
 input.o: decl.h
 input.o: endian_calc.h
+input.o: errsym.h
 input.o: hash.h
 input.o: have_ban_pragma.h
 input.o: have_const.h
@@ -4780,12 +4748,12 @@ label.o: block.h
 label.o: bool.h
 label.o: byteswap.h
 label.o: calc.h
-label.o: calcerr.h
 label.o: charbit.h
 label.o: cmath.h
 label.o: config.h
 label.o: decl.h
 label.o: endian_calc.h
+label.o: errsym.h
 label.o: func.h
 label.o: hash.h
 label.o: have_ban_pragma.h
@@ -4814,7 +4782,6 @@ lib_calc.o: block.h
 lib_calc.o: bool.h
 lib_calc.o: byteswap.h
 lib_calc.o: calc.h
-lib_calc.o: calcerr.h
 lib_calc.o: charbit.h
 lib_calc.o: cmath.h
 lib_calc.o: conf.h
@@ -4822,6 +4789,7 @@ lib_calc.o: config.h
 lib_calc.o: custom.h
 lib_calc.o: decl.h
 lib_calc.o: endian_calc.h
+lib_calc.o: errsym.h
 lib_calc.o: func.h
 lib_calc.o: hash.h
 lib_calc.o: have_ban_pragma.h
@@ -4877,12 +4845,12 @@ listfunc.o: banned.h
 listfunc.o: block.h
 listfunc.o: bool.h
 listfunc.o: byteswap.h
-listfunc.o: calcerr.h
 listfunc.o: charbit.h
 listfunc.o: cmath.h
 listfunc.o: config.h
 listfunc.o: decl.h
 listfunc.o: endian_calc.h
+listfunc.o: errsym.h
 listfunc.o: hash.h
 listfunc.o: have_ban_pragma.h
 listfunc.o: have_const.h
@@ -4914,12 +4882,12 @@ matfunc.o: banned.h
 matfunc.o: block.h
 matfunc.o: bool.h
 matfunc.o: byteswap.h
-matfunc.o: calcerr.h
 matfunc.o: charbit.h
 matfunc.o: cmath.h
 matfunc.o: config.h
 matfunc.o: decl.h
 matfunc.o: endian_calc.h
+matfunc.o: errsym.h
 matfunc.o: hash.h
 matfunc.o: have_ban_pragma.h
 matfunc.o: have_const.h
@@ -4947,12 +4915,12 @@ math_error.o: block.h
 math_error.o: bool.h
 math_error.o: byteswap.h
 math_error.o: calc.h
-math_error.o: calcerr.h
 math_error.o: charbit.h
 math_error.o: cmath.h
 math_error.o: config.h
 math_error.o: decl.h
 math_error.o: endian_calc.h
+math_error.o: errsym.h
 math_error.o: hash.h
 math_error.o: have_ban_pragma.h
 math_error.o: have_const.h
@@ -4978,12 +4946,12 @@ obj.o: block.h
 obj.o: bool.h
 obj.o: byteswap.h
 obj.o: calc.h
-obj.o: calcerr.h
 obj.o: charbit.h
 obj.o: cmath.h
 obj.o: config.h
 obj.o: decl.h
 obj.o: endian_calc.h
+obj.o: errsym.h
 obj.o: func.h
 obj.o: hash.h
 obj.o: have_ban_pragma.h
@@ -5015,13 +4983,13 @@ opcodes.o: block.h
 opcodes.o: bool.h
 opcodes.o: byteswap.h
 opcodes.o: calc.h
-opcodes.o: calcerr.h
 opcodes.o: charbit.h
 opcodes.o: cmath.h
 opcodes.o: config.h
 opcodes.o: custom.h
 opcodes.o: decl.h
 opcodes.o: endian_calc.h
+opcodes.o: errsym.h
 opcodes.o: file.h
 opcodes.o: func.h
 opcodes.o: hash.h
@@ -5077,12 +5045,12 @@ poly.o: banned.h
 poly.o: block.h
 poly.o: bool.h
 poly.o: byteswap.h
-poly.o: calcerr.h
 poly.o: charbit.h
 poly.o: cmath.h
 poly.o: config.h
 poly.o: decl.h
 poly.o: endian_calc.h
+poly.o: errsym.h
 poly.o: hash.h
 poly.o: have_ban_pragma.h
 poly.o: have_const.h
@@ -5239,12 +5207,12 @@ quickhash.o: banned.h
 quickhash.o: block.h
 quickhash.o: bool.h
 quickhash.o: byteswap.h
-quickhash.o: calcerr.h
 quickhash.o: charbit.h
 quickhash.o: cmath.h
 quickhash.o: config.h
 quickhash.o: decl.h
 quickhash.o: endian_calc.h
+quickhash.o: errsym.h
 quickhash.o: hash.h
 quickhash.o: have_ban_pragma.h
 quickhash.o: have_const.h
@@ -5271,12 +5239,12 @@ sample_many.o: block.h
 sample_many.o: bool.h
 sample_many.o: byteswap.h
 sample_many.o: calc.h
-sample_many.o: calcerr.h
 sample_many.o: charbit.h
 sample_many.o: cmath.h
 sample_many.o: config.h
 sample_many.o: decl.h
 sample_many.o: endian_calc.h
+sample_many.o: errsym.h
 sample_many.o: hash.h
 sample_many.o: have_ban_pragma.h
 sample_many.o: have_const.h
@@ -5303,12 +5271,12 @@ sample_rand.o: block.h
 sample_rand.o: bool.h
 sample_rand.o: byteswap.h
 sample_rand.o: calc.h
-sample_rand.o: calcerr.h
 sample_rand.o: charbit.h
 sample_rand.o: cmath.h
 sample_rand.o: config.h
 sample_rand.o: decl.h
 sample_rand.o: endian_calc.h
+sample_rand.o: errsym.h
 sample_rand.o: hash.h
 sample_rand.o: have_ban_pragma.h
 sample_rand.o: have_const.h
@@ -5371,12 +5339,12 @@ sha1.o: banned.h
 sha1.o: block.h
 sha1.o: bool.h
 sha1.o: byteswap.h
-sha1.o: calcerr.h
 sha1.o: charbit.h
 sha1.o: cmath.h
 sha1.o: config.h
 sha1.o: decl.h
 sha1.o: endian_calc.h
+sha1.o: errsym.h
 sha1.o: hash.h
 sha1.o: have_ban_pragma.h
 sha1.o: have_const.h
@@ -5400,12 +5368,12 @@ size.o: banned.h
 size.o: block.h
 size.o: bool.h
 size.o: byteswap.h
-size.o: calcerr.h
 size.o: charbit.h
 size.o: cmath.h
 size.o: config.h
 size.o: decl.h
 size.o: endian_calc.h
+size.o: errsym.h
 size.o: hash.h
 size.o: have_ban_pragma.h
 size.o: have_const.h
@@ -5432,12 +5400,12 @@ str.o: block.h
 str.o: bool.h
 str.o: byteswap.h
 str.o: calc.h
-str.o: calcerr.h
 str.o: charbit.h
 str.o: cmath.h
 str.o: config.h
 str.o: decl.h
 str.o: endian_calc.h
+str.o: errsym.h
 str.o: hash.h
 str.o: have_ban_pragma.h
 str.o: have_const.h
@@ -5477,12 +5445,12 @@ symbol.o: block.h
 symbol.o: bool.h
 symbol.o: byteswap.h
 symbol.o: calc.h
-symbol.o: calcerr.h
 symbol.o: charbit.h
 symbol.o: cmath.h
 symbol.o: config.h
 symbol.o: decl.h
 symbol.o: endian_calc.h
+symbol.o: errsym.h
 symbol.o: func.h
 symbol.o: hash.h
 symbol.o: have_ban_pragma.h
@@ -5513,12 +5481,12 @@ token.o: block.h
 token.o: bool.h
 token.o: byteswap.h
 token.o: calc.h
-token.o: calcerr.h
 token.o: charbit.h
 token.o: cmath.h
 token.o: config.h
 token.o: decl.h
 token.o: endian_calc.h
+token.o: errsym.h
 token.o: hash.h
 token.o: have_ban_pragma.h
 token.o: have_const.h
@@ -5545,12 +5513,12 @@ value.o: block.h
 value.o: bool.h
 value.o: byteswap.h
 value.o: calc.h
-value.o: calcerr.h
 value.o: charbit.h
 value.o: cmath.h
 value.o: config.h
 value.o: decl.h
 value.o: endian_calc.h
+value.o: errsym.h
 value.o: file.h
 value.o: func.h
 value.o: hash.h
@@ -5583,12 +5551,12 @@ version.o: block.h
 version.o: bool.h
 version.o: byteswap.h
 version.o: calc.h
-version.o: calcerr.h
 version.o: charbit.h
 version.o: cmath.h
 version.o: config.h
 version.o: decl.h
 version.o: endian_calc.h
+version.o: errsym.h
 version.o: hash.h
 version.o: have_ban_pragma.h
 version.o: have_const.h
@@ -5724,12 +5692,12 @@ zprime.o: banned.h
 zprime.o: block.h
 zprime.o: bool.h
 zprime.o: byteswap.h
-zprime.o: calcerr.h
 zprime.o: charbit.h
 zprime.o: cmath.h
 zprime.o: config.h
 zprime.o: decl.h
 zprime.o: endian_calc.h
+zprime.o: errsym.h
 zprime.o: hash.h
 zprime.o: have_ban_pragma.h
 zprime.o: have_const.h
@@ -5756,12 +5724,12 @@ zrand.o: banned.h
 zrand.o: block.h
 zrand.o: bool.h
 zrand.o: byteswap.h
-zrand.o: calcerr.h
 zrand.o: charbit.h
 zrand.o: cmath.h
 zrand.o: config.h
 zrand.o: decl.h
 zrand.o: endian_calc.h
+zrand.o: errsym.h
 zrand.o: hash.h
 zrand.o: have_ban_pragma.h
 zrand.o: have_const.h
@@ -5787,12 +5755,12 @@ zrandom.o: banned.h
 zrandom.o: block.h
 zrandom.o: bool.h
 zrandom.o: byteswap.h
-zrandom.o: calcerr.h
 zrandom.o: charbit.h
 zrandom.o: cmath.h
 zrandom.o: config.h
 zrandom.o: decl.h
 zrandom.o: endian_calc.h
+zrandom.o: errsym.h
 zrandom.o: hash.h
 zrandom.o: have_ban_pragma.h
 zrandom.o: have_const.h
diff --git a/block.c b/block.c
index 48b8c92..5a3b569 100644
--- a/block.c
+++ b/block.c
@@ -39,7 +39,7 @@
 #include "block.h"
 #include "nametype.h"
 #include "str.h"
-#include "calcerr.h"
+#include "errsym.h"
 
 
 #include "attribute.h"
diff --git a/calcerr.tbl b/calcerr.tbl
deleted file mode 100644
index 094eb4e..0000000
--- a/calcerr.tbl
+++ /dev/null
@@ -1,582 +0,0 @@
-#
-# calcerr - error codes and messages
-#
-# Copyright (C) 1999-2006,2021,2023  Ernest Bowen and Landon Curt Noll
-#
-# Calc is open software; you can redistribute it and/or modify it under
-# the terms of the version 2.1 of the GNU Lesser General Public License
-# as published by the Free Software Foundation.
-#
-# Calc is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-# or FITNESS FOR A PARTICULAR PURPOSE.	See the GNU Lesser General
-# Public License for more details.
-#
-# A copy of version 2.1 of the GNU Lesser General Public License is
-# distributed with calc under the filename COPYING-LGPL.  You should have
-# received a copy with calc; if not, write to Free Software Foundation, Inc.
-# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-#
-# Under source code control:	1996/05/23 17:38:44
-# File existed as early as:	1996
-#
-# Share and enjoy!  :-)		http://www.isthe.com/chongo/tech/comp/calc/
-
-# This file is used to build calcerr.h include file.
-#
-# Lines should be of the form:
-#
-#	SYMBOL	meaning
-
-######################################################################
-# WARNING: The order of the lines below is critical!  If you change  #
-#	   the order, you will break code that depends on the return #
-#	   value of the errno() builtin function.		     #
-#								     #
-#	   If you need to add values to this table, ONLY add then    #
-#	   to the bottom of the file!				     #
-######################################################################
-
-
-E_1OVER0	Division by zero
-E_0OVER0	Indeterminate (0/0)
-E_ADD		Bad arguments for +
-E_SUB		Bad arguments for binary -
-E_MUL		Bad arguments for *
-E_DIV		Bad arguments for /
-E_NEG		Bad argument for unary -
-E_SQUARE	Bad argument for squaring
-E_INV		Bad argument for inverse
-E_INCV		Bad argument for ++
-E_DECV		Bad argument for --
-E_INT		Bad argument for int
-E_FRAC		Bad argument for frac
-E_CONJ		Bad argument for conj
-E_APPR		Bad first argument for appr
-E_APPR2		Bad second argument for appr
-E_APPR3		Bad third argument for appr
-E_ROUND		Bad first argument for round
-E_ROUND2	Bad second argument for round
-E_ROUND3	Bad third argument for round
-E_BROUND	Bad first argument for bround
-E_BROUND2	Bad second argument for bround
-E_BROUND3	Bad third argument for bround
-E_SQRT		Bad first argument for sqrt
-E_SQRT2		Bad second argument for sqrt
-E_SQRT3		Bad third argument for sqrt
-E_ROOT		Bad first argument for root
-E_ROOT2		Bad second argument for root
-E_ROOT3		Bad third argument for root
-E_NORM		Bad argument for norm
-E_SHIFT		Bad first argument for << or >>
-E_SHIFT2	Bad second argument for << or >>
-E_SCALE		Bad first argument for scale
-E_SCALE2	Bad second argument for scale
-E_POWI		Bad first argument for ^
-E_POWI2		Bad second argument for ^
-E_POWER		Bad first argument for power
-E_POWER2	Bad second argument for power
-E_POWER3	Bad third argument for power
-E_QUO		Bad first argument for quo or //
-E_QUO2		Bad second argument for quo or //
-E_QUO3		Bad third argument for quo
-E_MOD		Bad first argument for mod or %
-E_MOD2		Bad second argument for mod or %
-E_MOD3		Bad third argument for mod
-E_SGN		Bad argument for sgn
-E_ABS		Bad first argument for abs
-E_ABS2		Bad second argument for abs
-E_EVAL		Scan error in argument for eval
-E_STR		Non-simple type for str
-E_EXP1		Non-real epsilon for exp
-E_EXP2		Bad first argument for exp
-E_FPUTC1	Non-file first argument for fputc
-E_FPUTC2	Bad second argument for fputc
-E_FPUTC3	File not open for writing for fputc
-E_FGETC1	Non-file first argument for fgetc
-E_FGETC2	File not open for reading for fgetc
-E_FOPEN1	Non-string arguments for fopen
-E_FOPEN2	Unrecognized mode for fopen
-E_FREOPEN1	Non-file first argument for freopen
-E_FREOPEN2	Non-string or unrecognized mode for freopen
-E_FREOPEN3	Non-string third argument for freopen
-E_FCLOSE1	Non-file argument for fclose
-E_FFLUSH	Non-file argument for fflush
-E_FPUTS1	Non-file first argument for fputs
-E_FPUTS2	Non-string argument after first for fputs
-E_FPUTS3	File not open for writing for fputs
-E_FGETS1	Non-file argument for fgets
-E_FGETS2	File not open for reading for fgets
-E_FPUTSTR1	Non-file first argument for fputstr
-E_FPUTSTR2	Non-string argument after first for fputstr
-E_FPUTSTR3	File not open for writing for fputstr
-E_FGETSTR1	Non-file first argument for fgetstr
-E_FGETSTR2	File not open for reading for fgetstr
-E_FGETLINE1	Non-file  argument for fgetline
-E_FGETLINE2	File not open for reading for fgetline
-E_FGETFIELD1	Non-file argument for fgetfield
-E_FGETFIELD2	File not open for reading for fgetfield
-E_REWIND1	Non-file argument for rewind
-E_FILES		Non-integer argument for files
-E_PRINTF1	Non-string fmt argument for fprint
-E_PRINTF2	Stdout not open for writing to ???
-E_FPRINTF1	Non-file first argument for fprintf
-E_FPRINTF2	Non-string second (fmt) argument for fprintf
-E_FPRINTF3	File not open for writing for fprintf
-E_STRPRINTF1	Non-string first (fmt) argument for strprintf
-E_STRPRINTF2	Error in attempting strprintf ???
-E_FSCAN1	Non-file first argument for fscan
-E_FSCAN2	File not open for reading for fscan
-E_STRSCAN	Non-string first argument for strscan
-E_FSCANF1	Non-file first argument for fscanf
-E_FSCANF2	Non-string second (fmt) argument for fscanf
-E_FSCANF3	Non-lvalue argument after second for fscanf
-E_FSCANF4	File not open for reading or other error for fscanf
-E_STRSCANF1	Non-string first argument for strscanf
-E_STRSCANF2	Non-string second (fmt) argument for strscanf
-E_STRSCANF3	Non-lvalue argument after second for strscanf
-E_STRSCANF4	Some error in attempting strscanf ???
-E_SCANF1	Non-string first (fmt) argument for scanf
-E_SCANF2	Non-lvalue argument after first for scanf
-E_SCANF3	Some error in attempting scanf ???
-E_FTELL1	Non-file argument for ftell
-E_FTELL2	File not open or other error for ftell
-E_FSEEK1	Non-file first argument for fseek
-E_FSEEK2	Non-integer or negative second argument for fseek
-E_FSEEK3	File not open or other error for fseek
-E_FSIZE1	Non-file argument for fsize
-E_FSIZE2	File not open or other error for fsize
-E_FEOF1		Non-file argument for feof
-E_FEOF2		File not open or other error for feof
-E_FERROR1	Non-file argument for ferror
-E_FERROR2	File not open or other error for ferror
-E_UNGETC1	Non-file argument for ungetc
-E_UNGETC2	File not open for reading for ungetc
-E_UNGETC3	Bad second argument or other error for ungetc
-E_BIGEXP	Exponent too big in scanning
-E_ISATTY1	UNUSED ERROR: E_ISATTY1 is no longer used
-E_ISATTY2	UNUSED ERROR: E_ISATTY2 is no longer used
-E_ACCESS1	Non-string first argument for access
-E_ACCESS2	Bad second argument for access
-E_SEARCH1	Bad first argument for search
-E_SEARCH2	Bad second argument for search
-E_SEARCH3	Bad third argument for search
-E_SEARCH4	Bad fourth argument for search
-E_SEARCH5	Cannot find fsize or fpos for search
-E_SEARCH6	File not readable for search
-E_RSEARCH1	Bad first argument for rsearch
-E_RSEARCH2	Bad second argument for rsearch
-E_RSEARCH3	Bad third argument for rsearch
-E_RSEARCH4	Bad fourth argument for rsearch
-E_RSEARCH5	Cannot find fsize or fpos for rsearch
-E_RSEARCH6	File not readable for rsearch
-E_MANYOPEN	Too many open files
-E_REWIND2	Attempt to rewind a file that is not open
-E_STRERROR1	Bad argument type for strerror
-E_STRERROR2	Index out of range for strerror
-E_COS1		Bad epsilon for cos
-E_COS2		Bad first argument for cos
-E_SIN1		Bad epsilon for sin
-E_SIN2		Bad first argument for sin
-E_EVAL2		Non-string argument for eval
-E_ARG1		Bad epsilon for arg
-E_ARG2		Bad first argument for arg
-E_POLAR1	Non-real argument for polar
-E_POLAR2	Bad epsilon for polar
-E_FCNT		UNUSED ERROR: Non-integral argument for fcnt
-E_MATFILL1	Non-variable first argument for matfill
-E_MATFILL2	Non-matrix first argument-value for matfill
-E_MATDIM	Non-matrix argument for matdim
-E_MATSUM	Non-matrix argument for matsum
-E_ISIDENT	UNUSED ERROR: E_ISIDENT is no longer used
-E_MATTRANS1	Non-matrix argument for mattrans
-E_MATTRANS2	Non-two-dimensional matrix for mattrans
-E_DET1		Non-matrix argument for det
-E_DET2		Matrix for det not of dimension 2
-E_DET3		Non-square matrix for det
-E_MATMIN1	Non-matrix first argument for matmin
-E_MATMIN2	Non-positive-integer second argument for matmin
-E_MATMIN3	Second argument for matmin exceeds dimension
-E_MATMAX1	Non-matrix first argument for matmin
-E_MATMAX2	Second argument for matmax not positive integer
-E_MATMAX3	Second argument for matmax exceeds dimension
-E_CP1		Non-matrix argument for cp
-E_CP2		Non-one-dimensional matrix for cp
-E_CP3		Matrix size not 3 for cp
-E_DP1		Non-matrix argument for dp
-E_DP2		Non-one-dimensional matrix for dp
-E_DP3		Different-size matrices for dp
-E_STRLEN	Non-string argument for strlen
-E_STRCAT	Non-string argument for strcat
-E_SUBSTR1	Non-string first argument for strcat
-E_SUBSTR2	Non-non-negative integer second argument for strcat
-E_CHAR		Bad argument for char
-E_ORD		Non-string argument for ord
-E_INSERT1	Non-list-variable first argument for insert
-E_INSERT2	Non-integral second argument for insert
-E_PUSH		Non-list-variable first argument for push
-E_APPEND	Non-list-variable first argument for append
-E_DELETE1	Non-list-variable first argument for delete
-E_DELETE2	Non-integral second argument for delete
-E_POP		Non-list-variable argument for pop
-E_REMOVE	Non-list-variable argument for remove
-E_LN1		Bad epsilon argument for ln
-E_LN2		Non-numeric first argument for ln
-E_ERROR1	Non-integer argument for error
-E_ERROR2	Argument outside range for error
-E_EVAL3		Attempt to eval at maximum input depth
-E_EVAL4		Unable to open string for reading
-E_RM1		First argument for rm is not a non-empty string
-E_RM2		UNUSED ERROR: Unable to remove a file
-E_RDPERM	UNUSED ERROR: Operation allowed because calc mode disallows read operations
-E_WRPERM	Operation allowed because calc mode disallows write operations
-E_EXPERM	UNUSED ERROR: Operation allowed because calc mode disallows exec operations
-E_MIN		Unordered arguments for min
-E_MAX		Unordered arguments for max
-E_LISTMIN	Unordered items for minimum of list
-E_LISTMAX	Unordered items for maximum of list
-E_SIZE		Size undefined for argument type
-E_NO_C_ARG	Calc must be run with a -C argument to use custom function
-E_NO_CUSTOM	Calc was built with custom functions disabled
-E_UNK_CUSTOM	Custom function unknown, try: show custom
-E_BLK1		Non-integral length for block
-E_BLK2		Negative or too-large length for block
-E_BLK3		Non-integral chunksize for block
-E_BLK4		Negative or too-large chunksize for block
-E_BLKFREE1	Named block does not exist for blkfree
-E_BLKFREE2	Non-integral id specification for blkfree
-E_BLKFREE3	Block with specified id does not exist
-E_BLKFREE4	Block already freed
-E_BLKFREE5	No-realloc protection prevents blkfree
-E_BLOCKS1	Non-integer argument for blocks
-E_BLOCKS2	Non-allocated index number for blocks
-E_COPY1		Non-integer or negative source index for copy
-E_COPY2		Source index too large for copy
-E_COPY3		UNUSED ERROR: E_COPY3 is no longer used
-E_COPY4		Non-integer or negative number for copy
-E_COPY5		Number too large for copy
-E_COPY6		Non-integer or negative destination index for copy
-E_COPY7		Destination index too large for copy
-E_COPY8		Freed block source for copy
-E_COPY9		Unsuitable source type for copy
-E_COPY10	Freed block destination for copy
-E_COPY11	Unsuitable destination type for copy
-E_COPY12	Incompatible source and destination for copy
-E_COPY13	No-copy-from source variable
-E_COPY14	No-copy-to destination variable
-E_COPY15	No-copy-from source named block
-E_COPY16	No-copy-to destination named block
-E_COPY17	No-relocate destination for copy
-E_COPYF1	File not open for copy
-E_COPYF2	fseek or fsize failure for copy
-E_COPYF3	fwrite error for copy
-E_COPYF4	fread error for copy
-E_PROTECT1	Non-variable first argument for protect
-E_PROTECT2	Bad second argument for protect
-E_PROTECT3	Bad third argument for protect
-E_MATFILL3	No-copy-to destination for matfill
-E_MATFILL4	No-assign-from source for matfill
-E_MATTRACE1	Non-matrix argument for mattrace
-E_MATTRACE2	Non-two-dimensional argument for mattrace
-E_MATTRACE3	Non-square argument for mattrace
-E_TAN1		Bad epsilon for tan
-E_TAN2		Bad argument for tan
-E_COT1		Bad epsilon for cot
-E_COT2		Bad argument for cot
-E_SEC1		Bad epsilon for sec
-E_SEC2		Bad argument for sec
-E_CSC1		Bad epsilon for csc
-E_CSC2		Bad argument for csc
-E_SINH1		Bad epsilon for sinh
-E_SINH2		Bad argument for sinh
-E_COSH1		Bad epsilon for cosh
-E_COSH2		Bad argument for cosh
-E_TANH1		Bad epsilon for tanh
-E_TANH2		Bad argument for tanh
-E_COTH1		Bad epsilon for coth
-E_COTH2		Bad argument for coth
-E_SECH1		Bad epsilon for sech
-E_SECH2		Bad argument for sech
-E_CSCH1		Bad epsilon for csch
-E_CSCH2		Bad argument for csch
-E_ASIN1		Bad epsilon for asin
-E_ASIN2		Bad argument for asin
-E_ACOS1		Bad epsilon for acos
-E_ACOS2		Bad argument for acos
-E_ATAN1		Bad epsilon for atan
-E_ATAN2		Bad argument for atan
-E_ACOT1		Bad epsilon for acot
-E_ACOT2		Bad argument for acot
-E_ASEC1		Bad epsilon for asec
-E_ASEC2		Bad argument for asec
-E_ACSC1		Bad epsilon for acsc
-E_ACSC2		Bad argument for acsc
-E_ASINH1	Bad epsilon for asin
-E_ASINH2	Bad argument for asinh
-E_ACOSH1	Bad epsilon for acosh
-E_ACOSH2	Bad argument for acosh
-E_ATANH1	Bad epsilon for atanh
-E_ATANH2	Bad argument for atanh
-E_ACOTH1	Bad epsilon for acoth
-E_ACOTH2	Bad argument for acoth
-E_ASECH1	UNUSED ERROR: Bad epsilon for asech
-E_ASECH2	Bad argument for asech
-E_ACSCH1	Bad epsilon for acsch
-E_ACSCH2	Bad argument for acsch
-E_GD1		Bad epsilon for gd
-E_GD2		Bad argument for gd
-E_AGD1		Bad epsilon for agd
-E_AGD2		Bad argument for agd
-E_LOGINF	Log of zero or infinity
-E_STRADD	String addition failure
-E_STRMUL	String multiplication failure
-E_STRNEG	String reversal failure
-E_STRSUB	String subtraction failure
-E_BIT1		Bad argument type for bit
-E_BIT2		Index too large for bit
-E_SETBIT1	Non-integer second argument for setbit
-E_SETBIT2	Out-of-range index for setbit
-E_SETBIT3	Non-string first argument for setbit
-E_OR		Bad argument for or
-E_AND		Bad argument for and
-E_STROR		Allocation failure for string or
-E_STRAND	Allocation failure for string and
-E_XOR		Bad argument for xorvalue
-E_COMP		Bad argument for comp
-E_STRDIFF	Allocation failure for string diff
-E_STRCOMP	Allocation failure for string comp
-E_SEG1		Bad first argument for segment
-E_SEG2		Bad second argument for segment
-E_SEG3		Bad third argument for segment
-E_STRSEG	Failure for string segment
-E_HIGHBIT1	Bad argument type for highbit
-E_HIGHBIT2	Non-integer argument for highbit
-E_LOWBIT1	Bad argument type for lowbit
-E_LOWBIT2	Non-integer argument for lowbit
-E_CONTENT	Bad argument type for unary hash op
-E_HASHOP	Bad argument type for binary hash op
-E_HEAD1		Bad first argument for head
-E_HEAD2		Bad second argument for head
-E_STRHEAD	Failure for strhead
-E_TAIL1		Bad first argument for tail
-E_TAIL2		UNUSED ERROR: Bad second argument for tail
-E_STRTAIL	Failure for strtail
-E_STRSHIFT	Failure for strshift
-E_STRCMP	Non-string argument for strcmp
-E_STRNCMP	Bad argument type for strncmp
-E_XOR1		Varying types of argument for xor
-E_XOR2		Bad argument type for xor
-E_STRCPY	Bad argument type for strcpy
-E_STRNCPY	Bad argument type for strncpy
-E_BACKSLASH	Bad argument type for unary backslash
-E_SETMINUS	Bad argument type for setminus
-E_INDICES1	Bad first argument type for indices
-E_INDICES2	Bad second argument for indices
-E_EXP3		Too-large re(argument) for exp
-E_SINH3		Too-large re(argument) for sinh
-E_COSH3		Too-large re(argument) for cosh
-E_SIN3		Too-large im(argument) for sin
-E_COS3		Too-large im(argument) for cos
-E_GD3		Infinite or too-large result for gd
-E_AGD3		Infinite or too-large result for agd
-E_POWER4	Too-large value for power
-E_ROOT4		Too-large value for root
-E_DGT1		Non-real first arg for digit
-E_DGT2		Non-integral second arg for digit
-E_DGT3		Bad third arg for digit
-E_PLCS1		Bad first argument for places
-E_PLCS2		Bad second argument for places
-E_DGTS1		Bad first argument for digits
-E_DGTS2		Bad second argument for digits
-E_ILOG		Bad first argument for ilog
-E_ILOGB		Bad second argument for ilog
-E_ILOG10	Bad argument for ilog10
-E_ILOG2		Bad argument for ilog2
-E_COMB1		Non-integer second arg for comb
-E_COMB2		Too-large second arg for comb
-E_CTLN		Bad argument for catalan
-E_BERN		Bad argument for bern
-E_EULER		Bad argument for euler
-E_SLEEP		Bad argument for sleep
-E_TTY		calc_tty failure
-E_ASSIGN1	No-copy-to destination for octet assign
-E_ASSIGN2	No-copy-from source for octet assign
-E_ASSIGN3	No-change destination for octet assign
-E_ASSIGN4	Non-variable destination for assign
-E_ASSIGN5	No-assign-to destination for assign
-E_ASSIGN6	No-assign-from source for assign
-E_ASSIGN7	No-change destination for assign
-E_ASSIGN8	No-type-change destination for assign
-E_ASSIGN9	No-error-value destination for assign
-E_SWAP1		No-copy argument for octet swap
-E_SWAP2		No-assign-to-or-from argument for swap
-E_SWAP3		Non-lvalue argument for swap
-E_QUOMOD1	Non-lvalue argument 3 or 4 for quomod
-E_QUOMOD2	Non-real-number arg 1 or 2 or bad arg 5 for quomod
-E_QUOMOD3	No-assign-to argument 3 or 4 for quomod
-E_PREINC1	No-copy-to or no-change argument for octet preinc
-E_PREINC2	Non-variable argument for preinc
-E_PREINC3	No-assign-to or no-change argument for preinc
-E_PREDEC1	No-copy-to or no-change argument for octet predec
-E_PREDEC2	Non-variable argument for predec
-E_PREDEC3	No-assign-to or no-change argument for predec
-E_POSTINC1	No-copy-to or no-change argument for octet postinc
-E_POSTINC2	Non-variable argument for postinc
-E_POSTINC3	No-assign-to or no-change argument for postinc
-E_POSTDEC1	No-copy-to or no-change argument for octet postdec
-E_POSTDEC2	Non-variable argument for postdec
-E_POSTDEC3	No-assign-to or no-change argument for postdec
-E_INIT1		Error-type structure for initialization
-E_INIT2		No-copy-to structure for initialization
-E_INIT3		Too many initializer values
-E_INIT4		Attempt to initialize freed named block
-E_INIT5		Bad structure type for initialization
-E_INIT6		No-assign-to element for initialization
-E_INIT7		No-change element for initialization
-E_INIT8		No-type-change element for initialization
-E_INIT9		No-error-value element for initialization
-E_INIT10	No-assign-or-copy-from source for initialization
-E_LIST1		No-relocate for list insert
-E_LIST2		No-relocate for list delete
-E_LIST3		No-relocate for list push
-E_LIST4		No-relocate for list append
-E_LIST5		No-relocate for list pop
-E_LIST6		No-relocate for list remove
-E_MODIFY1	Non-variable first argument for modify
-E_MODIFY2	Non-string second argument for modify
-E_MODIFY3	No-change first argument for modify
-E_MODIFY4	Undefined function for modify
-E_MODIFY5	Unacceptable type first argument for modify
-E_FPATHOPEN1	Non-string arguments for fpathopen
-E_FPATHOPEN2	Unrecognized mode for fpathopen
-E_LOG1		Bad epsilon argument for log
-E_LOG2		Non-numeric first argument for log
-E_LOG3		Cannot calculate log for this value
-E_FGETFILE1	Non-file argument for fgetfile
-E_FGETFILE2	File argument for fgetfile not open for reading
-E_FGETFILE3	Unable to set file position in fgetfile
-E_ESTR		UNUSED ERROR: Non-representable type for estr
-E_STRCASECMP	Non-string argument for strcasecmp
-E_STRNCASECMP	Bad argument type for strncasecmp
-E_ISUPPER	Bad argument for isupper
-E_ISLOWER	Bad argument for islower
-E_ISALNUM	Bad argument for isalnum
-E_ISALPHA	Bad argument for isalpha
-E_ISASCII	Bad argument for isascii
-E_ISCNTRL	Bad argument for iscntrl
-E_ISDIGIT	Bad argument for isdigit
-E_ISGRAPH	Bad argument for isgraph
-E_ISPRINT	Bad argument for isprint
-E_ISPUNCT	Bad argument for ispunct
-E_ISSPACE	Bad argument for isspace
-E_ISXDIGIT	Bad argument for isxdigit
-E_STRTOUPPER    Bad argument type for strtoupper
-E_STRTOLOWER    Bad argument type for strtolower
-E_TAN3		UNUSED ERROR: Invalid value for calculating the sin numerator for tan
-E_TAN4		UNUSED ERROR: Invalid value for calculating the cos denominator for tan
-E_COT3		UNUSED ERROR: Invalid value for calculating the sin numerator for cot
-E_COT4		UNUSED ERROR: Invalid value for calculating the cos denominator for cot
-E_SEC3		UNUSED ERROR: Invalid value for calculating the cos reciprocal for sec
-E_CSC3		UNUSED ERROR: Invalid value for calculating the sin reciprocal for csc
-E_TANH3		Invalid value for calculating the sinh numerator for tanh
-E_TANH4		Invalid value for calculating the cosh denominator for tanh
-E_COTH3		Invalid value for calculating the sinh numerator for coth
-E_COTH4		Invalid value for calculating the cosh denominator for coth
-E_SECH3		Invalid value for calculating the cosh reciprocal for sech
-E_CSCH3		Invalid value for calculating the sinh reciprocal for csch
-E_ASIN3		Invalid value for calculating asin
-E_ACOS3		Invalid value for calculating acos
-E_ASINH3	Invalid value for calculating asinh
-E_ACOSH3	Invalid value for calculating acosn
-E_ATAN3		Invalid value for calculating atan
-E_ACOT3		Invalid value for calculating acot
-E_ASEC3		Invalid value for calculating asec
-E_ACSC3		Invalid value for calculating acsc
-E_ATANH3	Invalid value for calculating atan
-E_ACOTH3	Invalid value for calculating acot
-E_ASECH3	Invalid value for calculating asec
-E_ACSCH3	Invalid value for calculating acsc
-E_D2R1		Bad epsilon for converting degrees to radians
-E_D2R2		Bad first argument converting degrees to radians
-E_R2D1		Bad epsilon for converting radians to degrees
-E_R2D2		Bad first argument converting radians to degrees
-E_G2R1		Bad epsilon for converting gradians to radians
-E_G2R2		Bad first argument converting gradians to radians
-E_R2G1		Bad epsilon for converting radians to gradians
-E_R2G2		Bad first argument converting radians to gradians
-E_D2G1		Bad first argument converting degrees to gradians
-E_G2D1		Bad first argument converting gradians to degrees
-E_D2DMS1	Non-lvalue arguments 2, 3 or 4 for d2dms
-E_D2DMS2	Non-real-number arg 1 for d2dms
-E_D2DMS3	No-assign-to argument 2, 3 or 4 for d2dms
-E_D2DMS4	Invalid rounding arg 5 for d2dms
-E_D2DM1		Non-lvalue arguments 2 or 3 for d2dm
-E_D2DM2		Non-real-number arg 1 for d2dm
-E_D2DM3		No-assign-to argument 2 or 3 for d2dm
-E_D2DM4		Invalid rounding arg 4 for d2dm
-E_G2GMS1	Non-lvalue arguments 2, 3 or 4 for g2gms
-E_G2GMS2	Non-real-number arg 1 for g2gms
-E_G2GMS3	No-assign-to argument 2 or 3 for g2gms
-E_G2GMS4	Invalid rounding arg 5 for g2gms
-E_G2GM1		Non-lvalue arguments 2 or 3 for g2gm
-E_G2GM2		Non-real-number arg 1 for g2gm
-E_G2GM3		No-assign-to argument 2, 3 or 4 for g2gm
-E_G2GM4		Invalid rounding arg 4 for g2gm
-E_H2HMS1	Non-lvalue arguments 2, 3 or 4 for h2hms
-E_H2HMS2	Non-real-number arg 1 for h2hms
-E_H2HMS3	No-assign-to argument 2, 3 or 4 for h2hms
-E_H2HMS4	Invalid rounding arg 5 for h2hms
-E_H2HM1		Non-lvalue arguments 2 or 3 for h2hm
-E_H2HM2		Non-real-number arg 1 for h2hm
-E_H2HM3		No-assign-to argument 2 or 3 for h2hm
-E_H2HM4		Invalid rounding arg 4 for h2hm
-E_DMS2D1	Non-real-number arguments 1, 2 or 3 for dms2d
-E_DMS2D2	Invalid rounding arg 4 for dms2d
-E_DM2D1		Non-real-number arguments 1 or 2 for dm2d
-E_DM2D2		Invalid rounding arg 4 for dm2d
-E_GMS2G1	Non-real-number arguments 1, 2 or 3 for gms2g
-E_GMS2G2	Invalid rounding arg 4 for gms2g
-E_GM2G1		Non-real-number arguments 1 or 2 for gm2g
-E_GM2G2		Invalid rounding arg 4 for gm2g
-E_HMS2H1	Non-real-number arguments 1, 2 or 3 for hms2h
-E_HMS2H2	Invalid rounding arg 4 for hms2h
-E_HM2H1		UNUSED ERROR: Non-real-number arguments 1 or 2 for hm2h
-E_HM2H2		UNUSED ERROR: Invalid rounding arg 4 for hm2h
-E_LOG2_1	Bad epsilon argument for log2
-E_LOG2_2	Non-numeric first argument for log2
-E_LOG2_3	Cannot calculate log2 for this value
-E_LOGN_1	Bad epsilon argument for logn
-E_LOGN_2	Non-numeric first argument for logn
-E_LOGN_3	Cannot calculate logn for this value
-E_LOGN_4	Cannot calculate logn for this log base
-E_LOGN_5	Non-numeric second argument for logn
-E_VERSIN1	Bad epsilon for versin
-E_VERSIN2	Bad first argument for versin
-E_VERSIN3	Too-large im(argument) for versin
-E_AVERSIN1	Bad epsilon for aversin
-E_AVERSIN2	Bad first argument for aversin
-E_AVERSIN3	Too-large im(argument) for aversin
-E_COVERSIN1	Bad epsilon for coversin
-E_COVERSIN2	Bad first argument for coversin
-E_COVERSIN3	Too-large im(argument) for coversin
-E_ACOVERSIN1	Bad epsilon for acoversin
-E_ACOVERSIN2	Bad first argument for acoversin
-E_ACOVERSIN3	Too-large im(argument) for acoversin
-E_VERCOS1	Bad epsilon for vercos
-E_VERCOS2	Bad first argument for vercos
-E_VERCOS3	Too-large im(argument) for vercos
-E_AVERCOS1	Bad epsilon for avercos
-E_AVERCOS2	Bad first argument for avercos
-E_AVERCOS3	Too-large im(argument) for avercos
-E_COVERCOS1	Bad epsilon for covercos
-E_COVERCOS2	Bad first argument for covercos
-E_COVERCOS3	Too-large im(argument) for covercos
-E_ACOVERCOS1	Bad epsilon for acovercos
-E_ACOVERCOS2	Bad first argument for acovercos
-E_ACOVERCOS3	Too-large im(argument) for acovercos
-E_TAN5		Invalid complex argument for tan
-E_COT5		Invalid zero argument for cot
-E_COT6		Invalid complex argument for cot
-E_SEC5		Invalid complex argument for sec
-E_CSC5		Invalid zero argument for cot
-E_CSC6		Invalid complex argument for csc
diff --git a/calcerr_c.awk b/calcerr_c.awk
deleted file mode 100644
index 79fc6bf..0000000
--- a/calcerr_c.awk
+++ /dev/null
@@ -1,45 +0,0 @@
-#!/usr/bin/sed
-#
-# calcerr_c - help produce calcerr.c from calcerr.tbl
-#
-# Copyright (C) 1999,2023  Landon Curt Noll
-#
-# Calc is open software; you can redistribute it and/or modify it under
-# the terms of the version 2.1 of the GNU Lesser General Public License
-# as published by the Free Software Foundation.
-#
-# Calc is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-# or FITNESS FOR A PARTICULAR PURPOSE.	See the GNU Lesser General
-# Public License for more details.
-#
-# A copy of version 2.1 of the GNU Lesser General Public License is
-# distributed with calc under the filename COPYING-LGPL.  You should have
-# received a copy with calc; if not, write to Free Software Foundation, Inc.
-# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-#
-# Under source code control:	1996/05/24 03:15:35
-# File existed as early as:	1996
-#
-# chongo <was here> /\oo/\	http://www.isthe.com/chongo/
-# Share and enjoy!  :-) http://www.isthe.com/chongo/tech/comp/calc/
-#
-BEGIN {
-    printf("#include <stdio.h>\n");
-    printf("#include \"calcerr.h\"\n\n");
-    printf("#include \"have_const.h\"\n\n");
-    printf("#include \"banned.h\"\t");
-    printf("/* include after system header <> includes */\n\n");
-    printf("/*\n");
-    printf(" * names of calc error values\n");
-    printf(" */\n");
-    printf("CONST char *error_table[E__COUNT+2] = {\n");
-    printf("    \"No error\",\t\t/* MUST be first */\n");
-}
-{
-    print $0;
-}
-END {
-    printf("    NULL\t/* MUST be last */\n");
-    printf("};\n");
-}
diff --git a/calcerr_c.sed b/calcerr_c.sed
deleted file mode 100644
index 638523c..0000000
--- a/calcerr_c.sed
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/usr/bin/sed
-#
-# calcerr_c - help produce calcerr.c from calcerr.tbl
-#
-# Copyright (C) 1999  Landon Curt Noll
-#
-# Calc is open software; you can redistribute it and/or modify it under
-# the terms of the version 2.1 of the GNU Lesser General Public License
-# as published by the Free Software Foundation.
-#
-# Calc is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-# or FITNESS FOR A PARTICULAR PURPOSE.	See the GNU Lesser General
-# Public License for more details.
-#
-# A copy of version 2.1 of the GNU Lesser General Public License is
-# distributed with calc under the filename COPYING-LGPL.  You should have
-# received a copy with calc; if not, write to Free Software Foundation, Inc.
-# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-#
-# Under source code control:	1996/05/24 03:15:35
-# File existed as early as:	1996
-#
-# chongo <was here> /\oo/\	http://www.isthe.com/chongo/
-# Share and enjoy!  :-)		http://www.isthe.com/chongo/tech/comp/calc/
-#
-s/#.*//
-s/[	 ][	 ]*$//
-/^$/d
-s/[^	 ][^	 ]*[	 ][	 ]*\(.*\)$/    "\1",/
diff --git a/calcerr_h.awk b/calcerr_h.awk
deleted file mode 100644
index 64d5c1b..0000000
--- a/calcerr_h.awk
+++ /dev/null
@@ -1,49 +0,0 @@
-#!/usr/bin/awk
-#
-# calcerr_h - help produce calcerr.h from calcerr.tbl
-#
-# Copyright (C) 1999,2023  Landon Curt Noll
-#
-# Calc is open software; you can redistribute it and/or modify it under
-# the terms of the version 2.1 of the GNU Lesser General Public License
-# as published by the Free Software Foundation.
-#
-# Calc is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-# or FITNESS FOR A PARTICULAR PURPOSE.	See the GNU Lesser General
-# Public License for more details.
-#
-# A copy of version 2.1 of the GNU Lesser General Public License is
-# distributed with calc under the filename COPYING-LGPL.  You should have
-# received a copy with calc; if not, write to Free Software Foundation, Inc.
-# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-#
-# Under source code control:	1996/05/23 17:38:44
-# File existed as early as:	1996
-#
-# chongo <was here> /\oo/\	http://www.isthe.com/chongo/
-# Share and enjoy!  :-) http://www.isthe.com/chongo/tech/comp/calc/
-#
-BEGIN {
-    ebase = 10000;
-    printf("#define E__BASE %d\t/* calc errors start above here */\n\n", ebase);
-}
-NF > 1 {
-    if (length($1) > 7) {
-	printf("#define %s\t", $1, NR);
-    } else {
-	printf("#define %s\t\t", $1, NR);
-    }
-    printf("%d\t/* ", ebase+NR);
-    for (i=2; i < NF; ++i) {
-	printf("%s ", $i);
-    }
-    printf("%s */\n", $NF);
-}
-END {
-    printf("\n#define E__HIGHEST\t%d\t/* highest calc error */\n", NR+ebase);
-    printf("#define E__COUNT\t%d\t/* number of calc errors */\n", NR);
-    printf("#define E_USERDEF\t20000\t/* base of user defined errors */\n");
-    printf("#define E_USERMAX\t32767\t/* maximum user defined error value */\n\n");
-    printf("/* names of calc error values */\n");
-}
diff --git a/calcerr_h.sed b/calcerr_h.sed
deleted file mode 100644
index 93177b3..0000000
--- a/calcerr_h.sed
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/usr/bin/sed
-#
-# calcerr_h - help produce calcerr.h from calcerr.tbl
-#
-# Copyright (C) 1999  Landon Curt Noll
-#
-# Calc is open software; you can redistribute it and/or modify it under
-# the terms of the version 2.1 of the GNU Lesser General Public License
-# as published by the Free Software Foundation.
-#
-# Calc is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-# or FITNESS FOR A PARTICULAR PURPOSE.	See the GNU Lesser General
-# Public License for more details.
-#
-# A copy of version 2.1 of the GNU Lesser General Public License is
-# distributed with calc under the filename COPYING-LGPL.  You should have
-# received a copy with calc; if not, write to Free Software Foundation, Inc.
-# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-#
-# Under source code control:	1996/05/23 17:38:44
-# File existed as early as:	1996
-#
-# chongo <was here> /\oo/\	http://www.isthe.com/chongo/
-# Share and enjoy!  :-)		http://www.isthe.com/chongo/tech/comp/calc/
-#
-s/#.*//
-s/[	 ][	 ]*$//
-/^$/d
-s/\([^	 ][^	 ]*\)[	 ][	 ]*\(.*\)$/\1 \2/
diff --git a/custom/HOW_TO_ADD b/custom/HOW_TO_ADD
index cf48544..1da2aa2 100644
--- a/custom/HOW_TO_ADD
+++ b/custom/HOW_TO_ADD
@@ -570,10 +570,10 @@ Step 9: Add the Make dependency tools
 	u_curds.o: ../alloc.h
 	u_curds.o: ../block.h
 	u_curds.o: ../byteswap.h
-	u_curds.o: ../calcerr.h
 	u_curds.o: ../cmath.h
 	u_curds.o: ../config.h
 	u_curds.o: ../endian_calc.h
+	u_curds.o: ../errsym.h
 	u_curds.o: ../hash.h
 	u_curds.o: ../have_const.h
 	u_curds.o: ../have_malloc.h
diff --git a/custom/Makefile b/custom/Makefile
index 3633188..97e8cb9 100644
--- a/custom/Makefile
+++ b/custom/Makefile
@@ -694,13 +694,13 @@ c_argv.o: ../block.h
 c_argv.o: ../bool.h
 c_argv.o: ../byteswap.h
 c_argv.o: ../calc.h
-c_argv.o: ../calcerr.h
 c_argv.o: ../charbit.h
 c_argv.o: ../cmath.h
 c_argv.o: ../config.h
 c_argv.o: ../custom.h
 c_argv.o: ../decl.h
 c_argv.o: ../endian_calc.h
+c_argv.o: ../errsym.h
 c_argv.o: ../hash.h
 c_argv.o: ../have_ban_pragma.h
 c_argv.o: ../have_const.h
@@ -726,13 +726,13 @@ c_devnull.o: ../banned.h
 c_devnull.o: ../block.h
 c_devnull.o: ../bool.h
 c_devnull.o: ../byteswap.h
-c_devnull.o: ../calcerr.h
 c_devnull.o: ../charbit.h
 c_devnull.o: ../cmath.h
 c_devnull.o: ../config.h
 c_devnull.o: ../custom.h
 c_devnull.o: ../decl.h
 c_devnull.o: ../endian_calc.h
+c_devnull.o: ../errsym.h
 c_devnull.o: ../hash.h
 c_devnull.o: ../have_ban_pragma.h
 c_devnull.o: ../have_const.h
@@ -759,13 +759,13 @@ c_help.o: ../banned.h
 c_help.o: ../block.h
 c_help.o: ../bool.h
 c_help.o: ../byteswap.h
-c_help.o: ../calcerr.h
 c_help.o: ../charbit.h
 c_help.o: ../cmath.h
 c_help.o: ../config.h
 c_help.o: ../custom.h
 c_help.o: ../decl.h
 c_help.o: ../endian_calc.h
+c_help.o: ../errsym.h
 c_help.o: ../hash.h
 c_help.o: ../have_ban_pragma.h
 c_help.o: ../have_const.h
@@ -792,13 +792,13 @@ c_pmodm127.o: ../banned.h
 c_pmodm127.o: ../block.h
 c_pmodm127.o: ../bool.h
 c_pmodm127.o: ../byteswap.h
-c_pmodm127.o: ../calcerr.h
 c_pmodm127.o: ../charbit.h
 c_pmodm127.o: ../cmath.h
 c_pmodm127.o: ../config.h
 c_pmodm127.o: ../custom.h
 c_pmodm127.o: ../decl.h
 c_pmodm127.o: ../endian_calc.h
+c_pmodm127.o: ../errsym.h
 c_pmodm127.o: ../hash.h
 c_pmodm127.o: ../have_ban_pragma.h
 c_pmodm127.o: ../have_const.h
@@ -824,13 +824,13 @@ c_pzasusb8.o: ../banned.h
 c_pzasusb8.o: ../block.h
 c_pzasusb8.o: ../bool.h
 c_pzasusb8.o: ../byteswap.h
-c_pzasusb8.o: ../calcerr.h
 c_pzasusb8.o: ../charbit.h
 c_pzasusb8.o: ../cmath.h
 c_pzasusb8.o: ../config.h
 c_pzasusb8.o: ../custom.h
 c_pzasusb8.o: ../decl.h
 c_pzasusb8.o: ../endian_calc.h
+c_pzasusb8.o: ../errsym.h
 c_pzasusb8.o: ../hash.h
 c_pzasusb8.o: ../have_ban_pragma.h
 c_pzasusb8.o: ../have_const.h
@@ -857,13 +857,13 @@ c_register.o: ../block.h
 c_register.o: ../bool.h
 c_register.o: ../byteswap.h
 c_register.o: ../calc.h
-c_register.o: ../calcerr.h
 c_register.o: ../charbit.h
 c_register.o: ../cmath.h
 c_register.o: ../config.h
 c_register.o: ../custom.h
 c_register.o: ../decl.h
 c_register.o: ../endian_calc.h
+c_register.o: ../errsym.h
 c_register.o: ../hash.h
 c_register.o: ../have_ban_pragma.h
 c_register.o: ../have_const.h
@@ -890,7 +890,6 @@ c_sysinfo.o: ../block.h
 c_sysinfo.o: ../bool.h
 c_sysinfo.o: ../byteswap.h
 c_sysinfo.o: ../calc.h
-c_sysinfo.o: ../calcerr.h
 c_sysinfo.o: ../charbit.h
 c_sysinfo.o: ../cmath.h
 c_sysinfo.o: ../conf.h
@@ -898,6 +897,7 @@ c_sysinfo.o: ../config.h
 c_sysinfo.o: ../custom.h
 c_sysinfo.o: ../decl.h
 c_sysinfo.o: ../endian_calc.h
+c_sysinfo.o: ../errsym.h
 c_sysinfo.o: ../fposval.h
 c_sysinfo.o: ../hash.h
 c_sysinfo.o: ../have_ban_pragma.h
@@ -929,13 +929,13 @@ custtbl.o: ../banned.h
 custtbl.o: ../block.h
 custtbl.o: ../bool.h
 custtbl.o: ../byteswap.h
-custtbl.o: ../calcerr.h
 custtbl.o: ../charbit.h
 custtbl.o: ../cmath.h
 custtbl.o: ../config.h
 custtbl.o: ../custom.h
 custtbl.o: ../decl.h
 custtbl.o: ../endian_calc.h
+custtbl.o: ../errsym.h
 custtbl.o: ../hash.h
 custtbl.o: ../have_ban_pragma.h
 custtbl.o: ../have_const.h
diff --git a/custom/c_sysinfo.c b/custom/c_sysinfo.c
index 6b12682..ccddfec 100644
--- a/custom/c_sysinfo.c
+++ b/custom/c_sysinfo.c
@@ -56,7 +56,6 @@ int c_sysinfo_allowed = 0;	/* CUSTOM undefined */
 #include "../longbits.h"
 #define CHECK_L_FORMAT
 #include "../block.h"
-#include "../calcerr.h"
 #include "../conf.h"
 #include "../endian_calc.h"
 #include "../fposval.h"
@@ -128,14 +127,6 @@ STATIC struct infoname sys_info[] = {
      EPSILON_DEFAULT, (FULL)0},
     {"ERRMAX", "default errmax value", NULL,
      (FULL)ERRMAX},
-    {"E_USERDEF", "base of user defined errors", NULL,
-     (FULL)E_USERDEF},
-    {"E__BASE", "calc errors start above here", NULL,
-     (FULL)E__BASE},
-    {"E__COUNT", "number of calc errors", NULL,
-     (FULL)E__COUNT},
-    {"E__HIGHEST", "highest calc error", NULL,
-     (FULL)E__HIGHEST},
     {"false", "boolean false", NULL,
      (FULL)false},
     {"FILEPOS_BITS", "file position size in bits", NULL,
diff --git a/errtbl.c b/errtbl.c
new file mode 100644
index 0000000..57c9e68
--- /dev/null
+++ b/errtbl.c
@@ -0,0 +1,1005 @@
+/*
+ * errtbl - calc computation error codes, symbols and messages
+ *
+ * This code is used to generate errsym.h and help/errorcodes.
+ * This code also verifies the consistency of the error_table[] array.
+ *
+ * NOTE: This file was once called calcerr.tbl.
+ *
+ * Copyright (C) 1999-2006,2021,2023  Ernest Bowen and Landon Curt Noll
+ *
+ * Calc is open software; you can redistribute it and/or modify it under
+ * the terms of the version 2.1 of the GNU Lesser General Public License
+ * as published by the Free Software Foundation.
+ *
+ * Calc is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.	See the GNU Lesser General
+ * Public License for more details.
+ *
+ * A copy of version 2.1 of the GNU Lesser General Public License is
+ * distributed with calc under the filename COPYING-LGPL.  You should have
+ * received a copy with calc; if not, write to Free Software Foundation, Inc.
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Under source code control:	1996/05/23 17:38:44
+ * File existed as early as:	1996
+ *
+ * Share and enjoy!  :-)		http://www.isthe.com/chongo/tech/comp/calc/
+ */
+
+#include <stdio.h>
+
+#include "errtbl.h"
+
+#define ERRTBL_COPYRIGHT_YEAR 2023	/* Copyright (C) year for generated files */
+
+/* number of calc computation error codes */
+#define MY_E__COUNT ((sizeof(error_table) / sizeof(error_table[0])) - 2)
+
+/* highest assigned calc computation error code */
+#define MY_E__HIGHEST (E__BASE + MY_E__COUNT)
+
+
+/************************************************************************/
+/*									*/
+/*  WARNING: The order of the lines below is critical!  If you change	*/
+/*	     the order, you will break code that depends on the return	*/
+/*	     value of the errno() builtin function.			*/
+/*									*/
+/*	     When adding entries to this table add then just before the */
+/*	     NULL pointer (* must be last *) entry.			*/
+/*									*/
+/************************************************************************/
+
+/*
+ * The error_table[] array represents the calc computation error related
+ * error codes, symbols and messages.
+ *
+ * The errnum of the 1st entry error_table[0] must be E__BASE.
+ *
+ * All errnum for the following entries just be consecutive,
+ * except for the final NULL entry.
+ *
+ * The final entry must have an errnum of -1, errsym of NULL and errmsg of NULL.
+ *
+ * Keep the errmsg short enough that lines in this table are not too long.
+ * You might want to keep the length of the errmsg to 80 characters or less.
+ */
+CONST struct errtbl error_table[] = {
+
+	/* The E__BASE entry below must start with 10000 and must be first!! */
+	{ 10000,	"E__BASE",		"No error" },
+	{ 10001,	"E_1OVER0",		"Division by zero" },
+	{ 10002,	"E_0OVER0",		"Indeterminate (0/0)" },
+	{ 10003,	"E_ADD",		"Bad arguments for +" },
+	{ 10004,	"E_SUB",		"Bad arguments for binary -" },
+	{ 10005,	"E_MUL",		"Bad arguments for *" },
+	{ 10006,	"E_DIV",		"Bad arguments for /" },
+	{ 10007,	"E_NEG",		"Bad argument for unary -" },
+	{ 10008,	"E_SQUARE",		"Bad argument for squaring" },
+	{ 10009,	"E_INV",		"Bad argument for inverse" },
+	{ 10010,	"E_INCV",		"Bad argument for ++" },
+	{ 10011,	"E_DECV",		"Bad argument for --" },
+	{ 10012,	"E_INT",		"Bad argument for int" },
+	{ 10013,	"E_FRAC",		"Bad argument for frac" },
+	{ 10014,	"E_CONJ",		"Bad argument for conj" },
+	{ 10015,	"E_APPR",		"Bad first argument for appr" },
+	{ 10016,	"E_APPR2",		"Bad second argument for appr" },
+	{ 10017,	"E_APPR3",		"Bad third argument for appr" },
+	{ 10018,	"E_ROUND",		"Bad first argument for round" },
+	{ 10019,	"E_ROUND2",		"Bad second argument for round" },
+	{ 10020,	"E_ROUND3",		"Bad third argument for round" },
+	{ 10021,	"E_BROUND",		"Bad first argument for bround" },
+	{ 10022,	"E_BROUND2",		"Bad second argument for bround" },
+	{ 10023,	"E_BROUND3",		"Bad third argument for bround" },
+	{ 10024,	"E_SQRT",		"Bad first argument for sqrt" },
+	{ 10025,	"E_SQRT2",		"Bad second argument for sqrt" },
+	{ 10026,	"E_SQRT3",		"Bad third argument for sqrt" },
+	{ 10027,	"E_ROOT",		"Bad first argument for root" },
+	{ 10028,	"E_ROOT2",		"Bad second argument for root" },
+	{ 10029,	"E_ROOT3",		"Bad third argument for root" },
+	{ 10030,	"E_NORM",		"Bad argument for norm" },
+	{ 10031,	"E_SHIFT",		"Bad first argument for << or >>" },
+	{ 10032,	"E_SHIFT2",		"Bad second argument for << or >>" },
+	{ 10033,	"E_SCALE",		"Bad first argument for scale" },
+	{ 10034,	"E_SCALE2",		"Bad second argument for scale" },
+	{ 10035,	"E_POWI",		"Bad first argument for ^" },
+	{ 10036,	"E_POWI2",		"Bad second argument for ^" },
+	{ 10037,	"E_POWER",		"Bad first argument for power" },
+	{ 10038,	"E_POWER2",		"Bad second argument for power" },
+	{ 10039,	"E_POWER3",		"Bad third argument for power" },
+	{ 10040,	"E_QUO",		"Bad first argument for quo or //" },
+	{ 10041,	"E_QUO2",		"Bad second argument for quo or //" },
+	{ 10042,	"E_QUO3",		"Bad third argument for quo" },
+	{ 10043,	"E_MOD",		"Bad first argument for mod or %" },
+	{ 10044,	"E_MOD2",		"Bad second argument for mod or %" },
+	{ 10045,	"E_MOD3",		"Bad third argument for mod" },
+	{ 10046,	"E_SGN",		"Bad argument for sgn" },
+	{ 10047,	"E_ABS",		"Bad first argument for abs" },
+	{ 10048,	"E_ABS2",		"Bad second argument for abs" },
+	{ 10049,	"E_EVAL",		"Scan error in argument for eval" },
+	{ 10050,	"E_STR",		"Non-simple type for str" },
+	{ 10051,	"E_EXP1",		"Non-real epsilon for exp" },
+	{ 10052,	"E_EXP2",		"Bad first argument for exp" },
+	{ 10053,	"E_FPUTC1",		"Non-file first argument for fputc" },
+	{ 10054,	"E_FPUTC2",		"Bad second argument for fputc" },
+	{ 10055,	"E_FPUTC3",		"File not open for writing for fputc" },
+	{ 10056,	"E_FGETC1",		"Non-file first argument for fgetc" },
+	{ 10057,	"E_FGETC2",		"File not open for reading for fgetc" },
+	{ 10058,	"E_FOPEN1",		"Non-string arguments for fopen" },
+	{ 10059,	"E_FOPEN2",		"Unrecognized mode for fopen" },
+	{ 10060,	"E_FREOPEN1",		"Non-file first argument for freopen" },
+	{ 10061,	"E_FREOPEN2",		"Non-string or unrecognized mode for freopen" },
+	{ 10062,	"E_FREOPEN3",		"Non-string third argument for freopen" },
+	{ 10063,	"E_FCLOSE1",		"Non-file argument for fclose" },
+	{ 10064,	"E_FFLUSH",		"Non-file argument for fflush" },
+	{ 10065,	"E_FPUTS1",		"Non-file first argument for fputs" },
+	{ 10066,	"E_FPUTS2",		"Non-string argument after first for fputs" },
+	{ 10067,	"E_FPUTS3",		"File not open for writing for fputs" },
+	{ 10068,	"E_FGETS1",		"Non-file argument for fgets" },
+	{ 10069,	"E_FGETS2",		"File not open for reading for fgets" },
+	{ 10070,	"E_FPUTSTR1",		"Non-file first argument for fputstr" },
+	{ 10071,	"E_FPUTSTR2",		"Non-string argument after first for fputstr" },
+	{ 10072,	"E_FPUTSTR3",		"File not open for writing for fputstr" },
+	{ 10073,	"E_FGETSTR1",		"Non-file first argument for fgetstr" },
+	{ 10074,	"E_FGETSTR2",		"File not open for reading for fgetstr" },
+	{ 10075,	"E_FGETLINE1",		"Non-file  argument for fgetline" },
+	{ 10076,	"E_FGETLINE2",		"File not open for reading for fgetline" },
+	{ 10077,	"E_FGETFIELD1",		"Non-file argument for fgetfield" },
+	{ 10078,	"E_FGETFIELD2",		"File not open for reading for fgetfield" },
+	{ 10079,	"E_REWIND1",		"Non-file argument for rewind" },
+	{ 10080,	"E_FILES",		"Non-integer argument for files" },
+	{ 10081,	"E_PRINTF1",		"Non-string fmt argument for fprint" },
+	{ 10082,	"E_PRINTF2",		"Stdout not open for writing to ???" },
+	{ 10083,	"E_FPRINTF1",		"Non-file first argument for fprintf" },
+	{ 10084,	"E_FPRINTF2",		"Non-string second (fmt) argument for fprintf" },
+	{ 10085,	"E_FPRINTF3",		"File not open for writing for fprintf" },
+	{ 10086,	"E_STRPRINTF1",		"Non-string first (fmt) argument for strprintf" },
+	{ 10087,	"E_STRPRINTF2",		"Error in attempting strprintf ???" },
+	{ 10088,	"E_FSCAN1",		"Non-file first argument for fscan" },
+	{ 10089,	"E_FSCAN2",		"File not open for reading for fscan" },
+	{ 10090,	"E_STRSCAN",		"Non-string first argument for strscan" },
+	{ 10091,	"E_FSCANF1",		"Non-file first argument for fscanf" },
+	{ 10092,	"E_FSCANF2",		"Non-string second (fmt) argument for fscanf" },
+	{ 10093,	"E_FSCANF3",		"Non-lvalue argument after second for fscanf" },
+	{ 10094,	"E_FSCANF4",		"File not open for reading or other error for fscanf" },
+	{ 10095,	"E_STRSCANF1",		"Non-string first argument for strscanf" },
+	{ 10096,	"E_STRSCANF2",		"Non-string second (fmt) argument for strscanf" },
+	{ 10097,	"E_STRSCANF3",		"Non-lvalue argument after second for strscanf" },
+	{ 10098,	"E_STRSCANF4",		"Some error in attempting strscanf ???" },
+	{ 10099,	"E_SCANF1",		"Non-string first (fmt) argument for scanf" },
+	{ 10100,	"E_SCANF2",		"Non-lvalue argument after first for scanf" },
+	{ 10101,	"E_SCANF3",		"Some error in attempting scanf ???" },
+	{ 10102,	"E_FTELL1",		"Non-file argument for ftell" },
+	{ 10103,	"E_FTELL2",		"File not open or other error for ftell" },
+	{ 10104,	"E_FSEEK1",		"Non-file first argument for fseek" },
+	{ 10105,	"E_FSEEK2",		"Non-integer or negative second argument for fseek" },
+	{ 10106,	"E_FSEEK3",		"File not open or other error for fseek" },
+	{ 10107,	"E_FSIZE1",		"Non-file argument for fsize" },
+	{ 10108,	"E_FSIZE2",		"File not open or other error for fsize" },
+	{ 10109,	"E_FEOF1",		"Non-file argument for feof" },
+	{ 10110,	"E_FEOF2",		"File not open or other error for feof" },
+	{ 10111,	"E_FERROR1",		"Non-file argument for ferror" },
+	{ 10112,	"E_FERROR2",		"File not open or other error for ferror" },
+	{ 10113,	"E_UNGETC1",		"Non-file argument for ungetc" },
+	{ 10114,	"E_UNGETC2",		"File not open for reading for ungetc" },
+	{ 10115,	"E_UNGETC3",		"Bad second argument or other error for ungetc" },
+	{ 10116,	"E_BIGEXP",		"Exponent too big in scanning" },
+	{ 10117,	"E_ISATTY1",		"UNUSED ERROR: E_ISATTY1 is no longer used" },
+	{ 10118,	"E_ISATTY2",		"UNUSED ERROR: E_ISATTY2 is no longer used" },
+	{ 10119,	"E_ACCESS1",		"Non-string first argument for access" },
+	{ 10120,	"E_ACCESS2",		"Bad second argument for access" },
+	{ 10121,	"E_SEARCH1",		"Bad first argument for search" },
+	{ 10122,	"E_SEARCH2",		"Bad second argument for search" },
+	{ 10123,	"E_SEARCH3",		"Bad third argument for search" },
+	{ 10124,	"E_SEARCH4",		"Bad fourth argument for search" },
+	{ 10125,	"E_SEARCH5",		"Cannot find fsize or fpos for search" },
+	{ 10126,	"E_SEARCH6",		"File not readable for search" },
+	{ 10127,	"E_RSEARCH1",		"Bad first argument for rsearch" },
+	{ 10128,	"E_RSEARCH2",		"Bad second argument for rsearch" },
+	{ 10129,	"E_RSEARCH3",		"Bad third argument for rsearch" },
+	{ 10130,	"E_RSEARCH4",		"Bad fourth argument for rsearch" },
+	{ 10131,	"E_RSEARCH5",		"Cannot find fsize or fpos for rsearch" },
+	{ 10132,	"E_RSEARCH6",		"File not readable for rsearch" },
+	{ 10133,	"E_MANYOPEN",		"Too many open files" },
+	{ 10134,	"E_REWIND2",		"Attempt to rewind a file that is not open" },
+	{ 10135,	"E_STRERROR1",		"Bad argument type for strerror" },
+	{ 10136,	"E_STRERROR2",		"Index out of range for strerror" },
+	{ 10137,	"E_COS1",		"Bad epsilon for cos" },
+	{ 10138,	"E_COS2",		"Bad first argument for cos" },
+	{ 10139,	"E_SIN1",		"Bad epsilon for sin" },
+	{ 10140,	"E_SIN2",		"Bad first argument for sin" },
+	{ 10141,	"E_EVAL2",		"Non-string argument for eval" },
+	{ 10142,	"E_ARG1",		"Bad epsilon for arg" },
+	{ 10143,	"E_ARG2",		"Bad first argument for arg" },
+	{ 10144,	"E_POLAR1",		"Non-real argument for polar" },
+	{ 10145,	"E_POLAR2",		"Bad epsilon for polar" },
+	{ 10146,	"E_FCNT",		"UNUSED ERROR: Non-integral argument for fcnt" },
+	{ 10147,	"E_MATFILL1",		"Non-variable first argument for matfill" },
+	{ 10148,	"E_MATFILL2",		"Non-matrix first argument-value for matfill" },
+	{ 10149,	"E_MATDIM",		"Non-matrix argument for matdim" },
+	{ 10150,	"E_MATSUM",		"Non-matrix argument for matsum" },
+	{ 10151,	"E_ISIDENT",		"UNUSED ERROR: E_ISIDENT is no longer used" },
+	{ 10152,	"E_MATTRANS1",		"Non-matrix argument for mattrans" },
+	{ 10153,	"E_MATTRANS2",		"Non-two-dimensional matrix for mattrans" },
+	{ 10154,	"E_DET1",		"Non-matrix argument for det" },
+	{ 10155,	"E_DET2",		"Matrix for det not of dimension 2" },
+	{ 10156,	"E_DET3",		"Non-square matrix for det" },
+	{ 10157,	"E_MATMIN1",		"Non-matrix first argument for matmin" },
+	{ 10158,	"E_MATMIN2",		"Non-positive-integer second argument for matmin" },
+	{ 10159,	"E_MATMIN3",		"Second argument for matmin exceeds dimension" },
+	{ 10160,	"E_MATMAX1",		"Non-matrix first argument for matmin" },
+	{ 10161,	"E_MATMAX2",		"Second argument for matmax not positive integer" },
+	{ 10162,	"E_MATMAX3",		"Second argument for matmax exceeds dimension" },
+	{ 10163,	"E_CP1",		"Non-matrix argument for cp" },
+	{ 10164,	"E_CP2",		"Non-one-dimensional matrix for cp" },
+	{ 10165,	"E_CP3",		"Matrix size not 3 for cp" },
+	{ 10166,	"E_DP1",		"Non-matrix argument for dp" },
+	{ 10167,	"E_DP2",		"Non-one-dimensional matrix for dp" },
+	{ 10168,	"E_DP3",		"Different-size matrices for dp" },
+	{ 10169,	"E_STRLEN",		"Non-string argument for strlen" },
+	{ 10170,	"E_STRCAT",		"Non-string argument for strcat" },
+	{ 10171,	"E_SUBSTR1",		"Non-string first argument for strcat" },
+	{ 10172,	"E_SUBSTR2",		"Non-non-negative integer second argument for strcat" },
+	{ 10173,	"E_CHAR",		"Bad argument for char" },
+	{ 10174,	"E_ORD",		"Non-string argument for ord" },
+	{ 10175,	"E_INSERT1",		"Non-list-variable first argument for insert" },
+	{ 10176,	"E_INSERT2",		"Non-integral second argument for insert" },
+	{ 10177,	"E_PUSH",		"Non-list-variable first argument for push" },
+	{ 10178,	"E_APPEND",		"Non-list-variable first argument for append" },
+	{ 10179,	"E_DELETE1",		"Non-list-variable first argument for delete" },
+	{ 10180,	"E_DELETE2",		"Non-integral second argument for delete" },
+	{ 10181,	"E_POP",		"Non-list-variable argument for pop" },
+	{ 10182,	"E_REMOVE",		"Non-list-variable argument for remove" },
+	{ 10183,	"E_LN1",		"Bad epsilon argument for ln" },
+	{ 10184,	"E_LN2",		"Non-numeric first argument for ln" },
+	{ 10185,	"E_ERROR1",		"Non-integer argument for error" },
+	{ 10186,	"E_ERROR2",		"Argument outside range for error" },
+	{ 10187,	"E_EVAL3",		"Attempt to eval at maximum input depth" },
+	{ 10188,	"E_EVAL4",		"Unable to open string for reading" },
+	{ 10189,	"E_RM1",		"First argument for rm is not a non-empty string" },
+	{ 10190,	"E_RM2",		"UNUSED ERROR: Unable to remove a file" },
+	{ 10191,	"E_RDPERM",		"UNUSED ERROR: Operation allowed because calc mode disallows read operations" },
+	{ 10192,	"E_WRPERM",		"Operation allowed because calc mode disallows write operations" },
+	{ 10193,	"E_EXPERM",		"UNUSED ERROR: Operation allowed because calc mode disallows exec operations" },
+	{ 10194,	"E_MIN",		"Unordered arguments for min" },
+	{ 10195,	"E_MAX",		"Unordered arguments for max" },
+	{ 10196,	"E_LISTMIN",		"Unordered items for minimum of list" },
+	{ 10197,	"E_LISTMAX",		"Unordered items for maximum of list" },
+	{ 10198,	"E_SIZE",		"Size undefined for argument type" },
+	{ 10199,	"E_NO_C_ARG",		"Calc must be run with a -C argument to use custom function" },
+	{ 10200,	"E_NO_CUSTOM",		"Calc was built with custom functions disabled" },
+	{ 10201,	"E_UNK_CUSTOM",		"Custom function unknown, try: show custom" },
+	{ 10202,	"E_BLK1",		"Non-integral length for block" },
+	{ 10203,	"E_BLK2",		"Negative or too-large length for block" },
+	{ 10204,	"E_BLK3",		"Non-integral chunksize for block" },
+	{ 10205,	"E_BLK4",		"Negative or too-large chunksize for block" },
+	{ 10206,	"E_BLKFREE1",		"Named block does not exist for blkfree" },
+	{ 10207,	"E_BLKFREE2",		"Non-integral id specification for blkfree" },
+	{ 10208,	"E_BLKFREE3",		"Block with specified id does not exist" },
+	{ 10209,	"E_BLKFREE4",		"Block already freed" },
+	{ 10210,	"E_BLKFREE5",		"No-realloc protection prevents blkfree" },
+	{ 10211,	"E_BLOCKS1",		"Non-integer argument for blocks" },
+	{ 10212,	"E_BLOCKS2",		"Non-allocated index number for blocks" },
+	{ 10213,	"E_COPY1",		"Non-integer or negative source index for copy" },
+	{ 10214,	"E_COPY2",		"Source index too large for copy" },
+	{ 10215,	"E_COPY3",		"UNUSED ERROR: E_COPY3 is no longer used" },
+	{ 10216,	"E_COPY4",		"Non-integer or negative number for copy" },
+	{ 10217,	"E_COPY5",		"Number too large for copy" },
+	{ 10218,	"E_COPY6",		"Non-integer or negative destination index for copy" },
+	{ 10219,	"E_COPY7",		"Destination index too large for copy" },
+	{ 10220,	"E_COPY8",		"Freed block source for copy" },
+	{ 10221,	"E_COPY9",		"Unsuitable source type for copy" },
+	{ 10222,	"E_COPY10",		"Freed block destination for copy" },
+	{ 10223,	"E_COPY11",		"Unsuitable destination type for copy" },
+	{ 10224,	"E_COPY12",		"Incompatible source and destination for copy" },
+	{ 10225,	"E_COPY13",		"No-copy-from source variable" },
+	{ 10226,	"E_COPY14",		"No-copy-to destination variable" },
+	{ 10227,	"E_COPY15",		"No-copy-from source named block" },
+	{ 10228,	"E_COPY16",		"No-copy-to destination named block" },
+	{ 10229,	"E_COPY17",		"No-relocate destination for copy" },
+	{ 10230,	"E_COPYF1",		"File not open for copy" },
+	{ 10231,	"E_COPYF2",		"fseek or fsize failure for copy" },
+	{ 10232,	"E_COPYF3",		"fwrite error for copy" },
+	{ 10233,	"E_COPYF4",		"fread error for copy" },
+	{ 10234,	"E_PROTECT1",		"Non-variable first argument for protect" },
+	{ 10235,	"E_PROTECT2",		"Bad second argument for protect" },
+	{ 10236,	"E_PROTECT3",		"Bad third argument for protect" },
+	{ 10237,	"E_MATFILL3",		"No-copy-to destination for matfill" },
+	{ 10238,	"E_MATFILL4",		"No-assign-from source for matfill" },
+	{ 10239,	"E_MATTRACE1",		"Non-matrix argument for mattrace" },
+	{ 10240,	"E_MATTRACE2",		"Non-two-dimensional argument for mattrace" },
+	{ 10241,	"E_MATTRACE3",		"Non-square argument for mattrace" },
+	{ 10242,	"E_TAN1",		"Bad epsilon for tan" },
+	{ 10243,	"E_TAN2",		"Bad argument for tan" },
+	{ 10244,	"E_COT1",		"Bad epsilon for cot" },
+	{ 10245,	"E_COT2",		"Bad argument for cot" },
+	{ 10246,	"E_SEC1",		"Bad epsilon for sec" },
+	{ 10247,	"E_SEC2",		"Bad argument for sec" },
+	{ 10248,	"E_CSC1",		"Bad epsilon for csc" },
+	{ 10249,	"E_CSC2",		"Bad argument for csc" },
+	{ 10250,	"E_SINH1",		"Bad epsilon for sinh" },
+	{ 10251,	"E_SINH2",		"Bad argument for sinh" },
+	{ 10252,	"E_COSH1",		"Bad epsilon for cosh" },
+	{ 10253,	"E_COSH2",		"Bad argument for cosh" },
+	{ 10254,	"E_TANH1",		"Bad epsilon for tanh" },
+	{ 10255,	"E_TANH2",		"Bad argument for tanh" },
+	{ 10256,	"E_COTH1",		"Bad epsilon for coth" },
+	{ 10257,	"E_COTH2",		"Bad argument for coth" },
+	{ 10258,	"E_SECH1",		"Bad epsilon for sech" },
+	{ 10259,	"E_SECH2",		"Bad argument for sech" },
+	{ 10260,	"E_CSCH1",		"Bad epsilon for csch" },
+	{ 10261,	"E_CSCH2",		"Bad argument for csch" },
+	{ 10262,	"E_ASIN1",		"Bad epsilon for asin" },
+	{ 10263,	"E_ASIN2",		"Bad argument for asin" },
+	{ 10264,	"E_ACOS1",		"Bad epsilon for acos" },
+	{ 10265,	"E_ACOS2",		"Bad argument for acos" },
+	{ 10266,	"E_ATAN1",		"Bad epsilon for atan" },
+	{ 10267,	"E_ATAN2",		"Bad argument for atan" },
+	{ 10268,	"E_ACOT1",		"Bad epsilon for acot" },
+	{ 10269,	"E_ACOT2",		"Bad argument for acot" },
+	{ 10270,	"E_ASEC1",		"Bad epsilon for asec" },
+	{ 10271,	"E_ASEC2",		"Bad argument for asec" },
+	{ 10272,	"E_ACSC1",		"Bad epsilon for acsc" },
+	{ 10273,	"E_ACSC2",		"Bad argument for acsc" },
+	{ 10274,	"E_ASINH1",		"Bad epsilon for asin" },
+	{ 10275,	"E_ASINH2",		"Bad argument for asinh" },
+	{ 10276,	"E_ACOSH1",		"Bad epsilon for acosh" },
+	{ 10277,	"E_ACOSH2",		"Bad argument for acosh" },
+	{ 10278,	"E_ATANH1",		"Bad epsilon for atanh" },
+	{ 10279,	"E_ATANH2",		"Bad argument for atanh" },
+	{ 10280,	"E_ACOTH1",		"Bad epsilon for acoth" },
+	{ 10281,	"E_ACOTH2",		"Bad argument for acoth" },
+	{ 10282,	"E_ASECH1",		"UNUSED ERROR: Bad epsilon for asech" },
+	{ 10283,	"E_ASECH2",		"Bad argument for asech" },
+	{ 10284,	"E_ACSCH1",		"Bad epsilon for acsch" },
+	{ 10285,	"E_ACSCH2",		"Bad argument for acsch" },
+	{ 10286,	"E_GD1",		"Bad epsilon for gd" },
+	{ 10287,	"E_GD2",		"Bad argument for gd" },
+	{ 10288,	"E_AGD1",		"Bad epsilon for agd" },
+	{ 10289,	"E_AGD2",		"Bad argument for agd" },
+	{ 10290,	"E_LOGINF",		"Log of zero or infinity" },
+	{ 10291,	"E_STRADD",		"String addition failure" },
+	{ 10292,	"E_STRMUL",		"String multiplication failure" },
+	{ 10293,	"E_STRNEG",		"String reversal failure" },
+	{ 10294,	"E_STRSUB",		"String subtraction failure" },
+	{ 10295,	"E_BIT1",		"Bad argument type for bit" },
+	{ 10296,	"E_BIT2",		"Index too large for bit" },
+	{ 10297,	"E_SETBIT1",		"Non-integer second argument for setbit" },
+	{ 10298,	"E_SETBIT2",		"Out-of-range index for setbit" },
+	{ 10299,	"E_SETBIT3",		"Non-string first argument for setbit" },
+	{ 10300,	"E_OR",			"Bad argument for or" },
+	{ 10301,	"E_AND",		"Bad argument for and" },
+	{ 10302,	"E_STROR",		"Allocation failure for string or" },
+	{ 10303,	"E_STRAND",		"Allocation failure for string and" },
+	{ 10304,	"E_XOR",		"Bad argument for xorvalue" },
+	{ 10305,	"E_COMP",		"Bad argument for comp" },
+	{ 10306,	"E_STRDIFF",		"Allocation failure for string diff" },
+	{ 10307,	"E_STRCOMP",		"Allocation failure for string comp" },
+	{ 10308,	"E_SEG1",		"Bad first argument for segment" },
+	{ 10309,	"E_SEG2",		"Bad second argument for segment" },
+	{ 10310,	"E_SEG3",		"Bad third argument for segment" },
+	{ 10311,	"E_STRSEG",		"Failure for string segment" },
+	{ 10312,	"E_HIGHBIT1",		"Bad argument type for highbit" },
+	{ 10313,	"E_HIGHBIT2",		"Non-integer argument for highbit" },
+	{ 10314,	"E_LOWBIT1",		"Bad argument type for lowbit" },
+	{ 10315,	"E_LOWBIT2",		"Non-integer argument for lowbit" },
+	{ 10316,	"E_CONTENT",		"Bad argument type for unary hash op" },
+	{ 10317,	"E_HASHOP",		"Bad argument type for binary hash op" },
+	{ 10318,	"E_HEAD1",		"Bad first argument for head" },
+	{ 10319,	"E_HEAD2",		"Bad second argument for head" },
+	{ 10320,	"E_STRHEAD",		"Failure for strhead" },
+	{ 10321,	"E_TAIL1",		"Bad first argument for tail" },
+	{ 10322,	"E_TAIL2",		"UNUSED ERROR: Bad second argument for tail" },
+	{ 10323,	"E_STRTAIL",		"Failure for strtail" },
+	{ 10324,	"E_STRSHIFT",		"Failure for strshift" },
+	{ 10325,	"E_STRCMP",		"Non-string argument for strcmp" },
+	{ 10326,	"E_STRNCMP",		"Bad argument type for strncmp" },
+	{ 10327,	"E_XOR1",		"Varying types of argument for xor" },
+	{ 10328,	"E_XOR2",		"Bad argument type for xor" },
+	{ 10329,	"E_STRCPY",		"Bad argument type for strcpy" },
+	{ 10330,	"E_STRNCPY",		"Bad argument type for strncpy" },
+	{ 10331,	"E_BACKSLASH",		"Bad argument type for unary backslash" },
+	{ 10332,	"E_SETMINUS",		"Bad argument type for setminus" },
+	{ 10333,	"E_INDICES1",		"Bad first argument type for indices" },
+	{ 10334,	"E_INDICES2",		"Bad second argument for indices" },
+	{ 10335,	"E_EXP3",		"Too-large re(argument) for exp" },
+	{ 10336,	"E_SINH3",		"Too-large re(argument) for sinh" },
+	{ 10337,	"E_COSH3",		"Too-large re(argument) for cosh" },
+	{ 10338,	"E_SIN3",		"Too-large im(argument) for sin" },
+	{ 10339,	"E_COS3",		"Too-large im(argument) for cos" },
+	{ 10340,	"E_GD3",		"Infinite or too-large result for gd" },
+	{ 10341,	"E_AGD3",		"Infinite or too-large result for agd" },
+	{ 10342,	"E_POWER4",		"Too-large value for power" },
+	{ 10343,	"E_ROOT4",		"Too-large value for root" },
+	{ 10344,	"E_DGT1",		"Non-real first arg for digit" },
+	{ 10345,	"E_DGT2",		"Non-integral second arg for digit" },
+	{ 10346,	"E_DGT3",		"Bad third arg for digit" },
+	{ 10347,	"E_PLCS1",		"Bad first argument for places" },
+	{ 10348,	"E_PLCS2",		"Bad second argument for places" },
+	{ 10349,	"E_DGTS1",		"Bad first argument for digits" },
+	{ 10350,	"E_DGTS2",		"Bad second argument for digits" },
+	{ 10351,	"E_ILOG",		"Bad first argument for ilog" },
+	{ 10352,	"E_ILOGB",		"Bad second argument for ilog" },
+	{ 10353,	"E_ILOG10",		"Bad argument for ilog10" },
+	{ 10354,	"E_ILOG2",		"Bad argument for ilog2" },
+	{ 10355,	"E_COMB1",		"Non-integer second arg for comb" },
+	{ 10356,	"E_COMB2",		"Too-large second arg for comb" },
+	{ 10357,	"E_CTLN",		"Bad argument for catalan" },
+	{ 10358,	"E_BERN",		"Bad argument for bern" },
+	{ 10359,	"E_EULER",		"Bad argument for euler" },
+	{ 10360,	"E_SLEEP",		"Bad argument for sleep" },
+	{ 10361,	"E_TTY",		"calc_tty failure" },
+	{ 10362,	"E_ASSIGN1",		"No-copy-to destination for octet assign" },
+	{ 10363,	"E_ASSIGN2",		"No-copy-from source for octet assign" },
+	{ 10364,	"E_ASSIGN3",		"No-change destination for octet assign" },
+	{ 10365,	"E_ASSIGN4",		"Non-variable destination for assign" },
+	{ 10366,	"E_ASSIGN5",		"No-assign-to destination for assign" },
+	{ 10367,	"E_ASSIGN6",		"No-assign-from source for assign" },
+	{ 10368,	"E_ASSIGN7",		"No-change destination for assign" },
+	{ 10369,	"E_ASSIGN8",		"No-type-change destination for assign" },
+	{ 10370,	"E_ASSIGN9",		"No-error-value destination for assign" },
+	{ 10371,	"E_SWAP1",		"No-copy argument for octet swap" },
+	{ 10372,	"E_SWAP2",		"No-assign-to-or-from argument for swap" },
+	{ 10373,	"E_SWAP3",		"Non-lvalue argument for swap" },
+	{ 10374,	"E_QUOMOD1",		"Non-lvalue argument 3 or 4 for quomod" },
+	{ 10375,	"E_QUOMOD2",		"Non-real-number arg 1 or 2 or bad arg 5 for quomod" },
+	{ 10376,	"E_QUOMOD3",		"No-assign-to argument 3 or 4 for quomod" },
+	{ 10377,	"E_PREINC1",		"No-copy-to or no-change argument for octet preinc" },
+	{ 10378,	"E_PREINC2",		"Non-variable argument for preinc" },
+	{ 10379,	"E_PREINC3",		"No-assign-to or no-change argument for preinc" },
+	{ 10380,	"E_PREDEC1",		"No-copy-to or no-change argument for octet predec" },
+	{ 10381,	"E_PREDEC2",		"Non-variable argument for predec" },
+	{ 10382,	"E_PREDEC3",		"No-assign-to or no-change argument for predec" },
+	{ 10383,	"E_POSTINC1",		"No-copy-to or no-change argument for octet postinc" },
+	{ 10384,	"E_POSTINC2",		"Non-variable argument for postinc" },
+	{ 10385,	"E_POSTINC3",		"No-assign-to or no-change argument for postinc" },
+	{ 10386,	"E_POSTDEC1",		"No-copy-to or no-change argument for octet postdec" },
+	{ 10387,	"E_POSTDEC2",		"Non-variable argument for postdec" },
+	{ 10388,	"E_POSTDEC3",		"No-assign-to or no-change argument for postdec" },
+	{ 10389,	"E_INIT1",		"Error-type structure for initialization" },
+	{ 10390,	"E_INIT2",		"No-copy-to structure for initialization" },
+	{ 10391,	"E_INIT3",		"Too many initializer values" },
+	{ 10392,	"E_INIT4",		"Attempt to initialize freed named block" },
+	{ 10393,	"E_INIT5",		"Bad structure type for initialization" },
+	{ 10394,	"E_INIT6",		"No-assign-to element for initialization" },
+	{ 10395,	"E_INIT7",		"No-change element for initialization" },
+	{ 10396,	"E_INIT8",		"No-type-change element for initialization" },
+	{ 10397,	"E_INIT9",		"No-error-value element for initialization" },
+	{ 10398,	"E_INIT10",		"No-assign-or-copy-from source for initialization" },
+	{ 10399,	"E_LIST1",		"No-relocate for list insert" },
+	{ 10400,	"E_LIST2",		"No-relocate for list delete" },
+	{ 10401,	"E_LIST3",		"No-relocate for list push" },
+	{ 10402,	"E_LIST4",		"No-relocate for list append" },
+	{ 10403,	"E_LIST5",		"No-relocate for list pop" },
+	{ 10404,	"E_LIST6",		"No-relocate for list remove" },
+	{ 10405,	"E_MODIFY1",		"Non-variable first argument for modify" },
+	{ 10406,	"E_MODIFY2",		"Non-string second argument for modify" },
+	{ 10407,	"E_MODIFY3",		"No-change first argument for modify" },
+	{ 10408,	"E_MODIFY4",		"Undefined function for modify" },
+	{ 10409,	"E_MODIFY5",		"Unacceptable type first argument for modify" },
+	{ 10410,	"E_FPATHOPEN1",		"Non-string arguments for fpathopen" },
+	{ 10411,	"E_FPATHOPEN2",		"Unrecognized mode for fpathopen" },
+	{ 10412,	"E_LOG1",		"Bad epsilon argument for log" },
+	{ 10413,	"E_LOG2",		"Non-numeric first argument for log" },
+	{ 10414,	"E_LOG3",		"Cannot calculate log for this value" },
+	{ 10415,	"E_FGETFILE1",		"Non-file argument for fgetfile" },
+	{ 10416,	"E_FGETFILE2",		"File argument for fgetfile not open for reading" },
+	{ 10417,	"E_FGETFILE3",		"Unable to set file position in fgetfile" },
+	{ 10418,	"E_ESTR",		"UNUSED ERROR: Non-representable type for estr" },
+	{ 10419,	"E_STRCASECMP",		"Non-string argument for strcasecmp" },
+	{ 10420,	"E_STRNCASECMP",	"Bad argument type for strncasecmp" },
+	{ 10421,	"E_ISUPPER",		"Bad argument for isupper" },
+	{ 10422,	"E_ISLOWER",		"Bad argument for islower" },
+	{ 10423,	"E_ISALNUM",		"Bad argument for isalnum" },
+	{ 10424,	"E_ISALPHA",		"Bad argument for isalpha" },
+	{ 10425,	"E_ISASCII",		"Bad argument for isascii" },
+	{ 10426,	"E_ISCNTRL",		"Bad argument for iscntrl" },
+	{ 10427,	"E_ISDIGIT",		"Bad argument for isdigit" },
+	{ 10428,	"E_ISGRAPH",		"Bad argument for isgraph" },
+	{ 10429,	"E_ISPRINT",		"Bad argument for isprint" },
+	{ 10430,	"E_ISPUNCT",		"Bad argument for ispunct" },
+	{ 10431,	"E_ISSPACE",		"Bad argument for isspace" },
+	{ 10432,	"E_ISXDIGIT",		"Bad argument for isxdigit" },
+	{ 10433,	"E_STRTOUPPER",		"Bad argument type for strtoupper" },
+	{ 10434,	"E_STRTOLOWER",		"Bad argument type for strtolower" },
+	{ 10435,	"E_TAN3",		"UNUSED ERROR: Invalid value for calculating the sin numerator for tan" },
+	{ 10436,	"E_TAN4",		"UNUSED ERROR: Invalid value for calculating the cos denominator for tan" },
+	{ 10437,	"E_COT3",		"UNUSED ERROR: Invalid value for calculating the sin numerator for cot" },
+	{ 10438,	"E_COT4",		"UNUSED ERROR: Invalid value for calculating the cos denominator for cot" },
+	{ 10439,	"E_SEC3",		"UNUSED ERROR: Invalid value for calculating the cos reciprocal for sec" },
+	{ 10440,	"E_CSC3",		"UNUSED ERROR: Invalid value for calculating the sin reciprocal for csc" },
+	{ 10441,	"E_TANH3",		"Invalid value for calculating the sinh numerator for tanh" },
+	{ 10442,	"E_TANH4",		"Invalid value for calculating the cosh denominator for tanh" },
+	{ 10443,	"E_COTH3",		"Invalid value for calculating the sinh numerator for coth" },
+	{ 10444,	"E_COTH4",		"Invalid value for calculating the cosh denominator for coth" },
+	{ 10445,	"E_SECH3",		"Invalid value for calculating the cosh reciprocal for sech" },
+	{ 10446,	"E_CSCH3",		"Invalid value for calculating the sinh reciprocal for csch" },
+	{ 10447,	"E_ASIN3",		"Invalid value for calculating asin" },
+	{ 10448,	"E_ACOS3",		"Invalid value for calculating acos" },
+	{ 10449,	"E_ASINH3",		"Invalid value for calculating asinh" },
+	{ 10450,	"E_ACOSH3",		"Invalid value for calculating acosn" },
+	{ 10451,	"E_ATAN3",		"Invalid value for calculating atan" },
+	{ 10452,	"E_ACOT3",		"Invalid value for calculating acot" },
+	{ 10453,	"E_ASEC3",		"Invalid value for calculating asec" },
+	{ 10454,	"E_ACSC3",		"Invalid value for calculating acsc" },
+	{ 10455,	"E_ATANH3",		"Invalid value for calculating atan" },
+	{ 10456,	"E_ACOTH3",		"Invalid value for calculating acot" },
+	{ 10457,	"E_ASECH3",		"Invalid value for calculating asec" },
+	{ 10458,	"E_ACSCH3",		"Invalid value for calculating acsc" },
+	{ 10459,	"E_D2R1",		"Bad epsilon for converting degrees to radians" },
+	{ 10460,	"E_D2R2",		"Bad first argument converting degrees to radians" },
+	{ 10461,	"E_R2D1",		"Bad epsilon for converting radians to degrees" },
+	{ 10462,	"E_R2D2",		"Bad first argument converting radians to degrees" },
+	{ 10463,	"E_G2R1",		"Bad epsilon for converting gradians to radians" },
+	{ 10464,	"E_G2R2",		"Bad first argument converting gradians to radians" },
+	{ 10465,	"E_R2G1",		"Bad epsilon for converting radians to gradians" },
+	{ 10466,	"E_R2G2",		"Bad first argument converting radians to gradians" },
+	{ 10467,	"E_D2G1",		"Bad first argument converting degrees to gradians" },
+	{ 10468,	"E_G2D1",		"Bad first argument converting gradians to degrees" },
+	{ 10469,	"E_D2DMS1",		"Non-lvalue arguments 2, 3 or 4 for d2dms" },
+	{ 10470,	"E_D2DMS2",		"Non-real-number arg 1 for d2dms" },
+	{ 10471,	"E_D2DMS3",		"No-assign-to argument 2, 3 or 4 for d2dms" },
+	{ 10472,	"E_D2DMS4",		"Invalid rounding arg 5 for d2dms" },
+	{ 10473,	"E_D2DM1",		"Non-lvalue arguments 2 or 3 for d2dm" },
+	{ 10474,	"E_D2DM2",		"Non-real-number arg 1 for d2dm" },
+	{ 10475,	"E_D2DM3",		"No-assign-to argument 2 or 3 for d2dm" },
+	{ 10476,	"E_D2DM4",		"Invalid rounding arg 4 for d2dm" },
+	{ 10477,	"E_G2GMS1",		"Non-lvalue arguments 2, 3 or 4 for g2gms" },
+	{ 10478,	"E_G2GMS2",		"Non-real-number arg 1 for g2gms" },
+	{ 10479,	"E_G2GMS3",		"No-assign-to argument 2 or 3 for g2gms" },
+	{ 10480,	"E_G2GMS4",		"Invalid rounding arg 5 for g2gms" },
+	{ 10481,	"E_G2GM1",		"Non-lvalue arguments 2 or 3 for g2gm" },
+	{ 10482,	"E_G2GM2",		"Non-real-number arg 1 for g2gm" },
+	{ 10483,	"E_G2GM3",		"No-assign-to argument 2, 3 or 4 for g2gm" },
+	{ 10484,	"E_G2GM4",		"Invalid rounding arg 4 for g2gm" },
+	{ 10485,	"E_H2HMS1",		"Non-lvalue arguments 2, 3 or 4 for h2hms" },
+	{ 10486,	"E_H2HMS2",		"Non-real-number arg 1 for h2hms" },
+	{ 10487,	"E_H2HMS3",		"No-assign-to argument 2, 3 or 4 for h2hms" },
+	{ 10488,	"E_H2HMS4",		"Invalid rounding arg 5 for h2hms" },
+	{ 10489,	"E_H2HM1",		"Non-lvalue arguments 2 or 3 for h2hm" },
+	{ 10490,	"E_H2HM2",		"Non-real-number arg 1 for h2hm" },
+	{ 10491,	"E_H2HM3",		"No-assign-to argument 2 or 3 for h2hm" },
+	{ 10492,	"E_H2HM4",		"Invalid rounding arg 4 for h2hm" },
+	{ 10493,	"E_DMS2D1",		"Non-real-number arguments 1, 2 or 3 for dms2d" },
+	{ 10494,	"E_DMS2D2",		"Invalid rounding arg 4 for dms2d" },
+	{ 10495,	"E_DM2D1",		"Non-real-number arguments 1 or 2 for dm2d" },
+	{ 10496,	"E_DM2D2",		"Invalid rounding arg 4 for dm2d" },
+	{ 10497,	"E_GMS2G1",		"Non-real-number arguments 1, 2 or 3 for gms2g" },
+	{ 10498,	"E_GMS2G2",		"Invalid rounding arg 4 for gms2g" },
+	{ 10499,	"E_GM2G1",		"Non-real-number arguments 1 or 2 for gm2g" },
+	{ 10500,	"E_GM2G2",		"Invalid rounding arg 4 for gm2g" },
+	{ 10501,	"E_HMS2H1",		"Non-real-number arguments 1, 2 or 3 for hms2h" },
+	{ 10502,	"E_HMS2H2",		"Invalid rounding arg 4 for hms2h" },
+	{ 10503,	"E_HM2H1",		"UNUSED ERROR: Non-real-number arguments 1 or 2 for hm2h" },
+	{ 10504,	"E_HM2H2",		"UNUSED ERROR: Invalid rounding arg 4 for hm2h" },
+	{ 10505,	"E_LOG2_1",		"Bad epsilon argument for log2" },
+	{ 10506,	"E_LOG2_2",		"Non-numeric first argument for log2" },
+	{ 10507,	"E_LOG2_3",		"Cannot calculate log2 for this value" },
+	{ 10508,	"E_LOGN_1",		"Bad epsilon argument for logn" },
+	{ 10509,	"E_LOGN_2",		"Non-numeric first argument for logn" },
+	{ 10510,	"E_LOGN_3",		"Cannot calculate logn for this value" },
+	{ 10511,	"E_LOGN_4",		"Cannot calculate logn for this log base" },
+	{ 10512,	"E_LOGN_5",		"Non-numeric second argument for logn" },
+	{ 10513,	"E_VERSIN1",		"Bad epsilon for versin" },
+	{ 10514,	"E_VERSIN2",		"Bad first argument for versin" },
+	{ 10515,	"E_VERSIN3",		"Too-large im(argument) for versin" },
+	{ 10516,	"E_AVERSIN1",		"Bad epsilon for aversin" },
+	{ 10517,	"E_AVERSIN2",		"Bad first argument for aversin" },
+	{ 10518,	"E_AVERSIN3",		"Too-large im(argument) for aversin" },
+	{ 10519,	"E_COVERSIN1",		"Bad epsilon for coversin" },
+	{ 10520,	"E_COVERSIN2",		"Bad first argument for coversin" },
+	{ 10521,	"E_COVERSIN3",		"Too-large im(argument) for coversin" },
+	{ 10522,	"E_ACOVERSIN1",		"Bad epsilon for acoversin" },
+	{ 10523,	"E_ACOVERSIN2",		"Bad first argument for acoversin" },
+	{ 10524,	"E_ACOVERSIN3",		"Too-large im(argument) for acoversin" },
+	{ 10525,	"E_VERCOS1",		"Bad epsilon for vercos" },
+	{ 10526,	"E_VERCOS2",		"Bad first argument for vercos" },
+	{ 10527,	"E_VERCOS3",		"Too-large im(argument) for vercos" },
+	{ 10528,	"E_AVERCOS1",		"Bad epsilon for avercos" },
+	{ 10529,	"E_AVERCOS2",		"Bad first argument for avercos" },
+	{ 10530,	"E_AVERCOS3",		"Too-large im(argument) for avercos" },
+	{ 10531,	"E_COVERCOS1",		"Bad epsilon for covercos" },
+	{ 10532,	"E_COVERCOS2",		"Bad first argument for covercos" },
+	{ 10533,	"E_COVERCOS3",		"Too-large im(argument) for covercos" },
+	{ 10534,	"E_ACOVERCOS1",		"Bad epsilon for acovercos" },
+	{ 10535,	"E_ACOVERCOS2",		"Bad first argument for acovercos" },
+	{ 10536,	"E_ACOVERCOS3",		"Too-large im(argument) for acovercos" },
+	{ 10537,	"E_TAN5",		"Invalid complex argument for tan" },
+	{ 10538,	"E_COT5",		"Invalid zero argument for cot" },
+	{ 10539,	"E_COT6",		"Invalid complex argument for cot" },
+	{ 10540,	"E_SEC5",		"Invalid complex argument for sec" },
+	{ 10541,	"E_CSC5",		"Invalid zero argument for cot" },
+	{ 10542,	"E_CSC6",		"Invalid complex argument for csc" },
+	/* add new entries above here and be sure their errnum numeric value is consecutive */
+
+	/* The next NULL entry must be last */
+	{ -1,		NULL,			NULL }
+};
+
+
+
+/*
+ * The code below is used to form the errcode executable and is NOT part of libcalc
+ */
+#if defined(ERRCODE_SRC)
+
+
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+
+
+/*
+ * errcode command line
+ */
+CONST char *usage =
+	"usage: %s [-h] [-e | -d]\n"
+	"\n"
+	"\t-h\tprint help and exit\n"
+	"\t-e\tprint the contents of help/errorcodes\n"
+	"\t-d\tprint the contents of errsym.h\n"
+	"\n"
+	"Exit codes:\n"
+	"    0\t\tall is OK\n"
+	"    2\t\t-h and help string\n"
+	"    3\t\tcommand line error\n"
+	" >=10\t\terror_table is invalid\n";
+
+
+char *program = "((NULL))";		/* our name */
+
+
+/*
+ * verify_error_table - verify the consistency of the error_table
+ *
+ * The errnum must start with E__BASE and be consecutive until the final entry.
+ *
+ * The errsym must be a non-NULL string that matches regular expression: ^E_[A-Z0-9_]+$ until the last entry.
+ *
+ * The errnsf must be a non-NULL non-empty string until the last entry.
+ *
+ * The final entry must have an errnum of -1, errsym of NULL and errmsg of NULL.
+ *
+ * This function does not return on error or if the error_table is invalid.
+ */
+S_FUNC void
+verify_error_table(void)
+{
+	size_t len;		/* length of the error_table */
+	size_t e__count;	/* computed E__COUNT value */
+	char *p;
+	size_t i;
+
+	/*
+	 * verify error_table size
+	 */
+	len = sizeof(error_table) / sizeof(error_table[0]);
+	e__count = len - 2;
+	if (e__count != MY_E__COUNT) {
+		fprintf(stderr, "**** %s ERROR: error_table length: %zu != MY_E__COUNT+2: %lu\n",
+			program, len, MY_E__COUNT+2);
+		exit(10);
+	}
+
+	/*
+	 * verify the initial errnum of the 1st error_table entry
+	 */
+	if (error_table[0].errnum != E__BASE) {
+		fprintf(stderr, "**** %s ERROR: initial entry error_table[0].errnum: %d != E__BASE: %d\n",
+			program, error_table[0].errnum, E__BASE);
+		exit(11);
+	}
+	if (error_table[0].errsym == NULL) {
+		fprintf(stderr, "**** %s ERROR: error_table[0].errsym is NULL\n",
+			program);
+		exit(12);
+	}
+	if (strcmp(error_table[0].errsym, "E__BASE") != 0) {
+		fprintf(stderr, "**** %s ERROR: error_table[0].errsym: %s != E__BASE\n",
+			program, error_table[0].errsym);
+		exit(13);
+	}
+	if (error_table[0].errmsg == NULL) {
+		fprintf(stderr, "**** %s ERROR: error_table[0].errmsg is NULL\n",
+			program);
+		exit(14);
+	}
+	if (strlen(error_table[0].errmsg) <= 0) {
+		fprintf(stderr, "**** %s ERROR: error_table[0].errmsg length: %zu must be > 0\n",
+			program, strlen(error_table[0].errmsg));
+		exit(15);
+	}
+
+	/*
+	 * verify 2nd thru end to last entry of error_table
+	 */
+	for (i=1; i < len-1; ++i) {
+
+		/*
+		 * check errnum - must be consecutive beyond E__BASE
+		 */
+		if ((unsigned long)(error_table[i].errnum) != E__BASE+i) {
+			fprintf(stderr, "**** %s ERROR: error_table[%zu].errnum: %d != %ld\n",
+				program, i, error_table[i].errnum, E__BASE+i);
+			exit(16);
+		}
+
+		/*
+		 * check errsym is a non-NULL string matching the regular expression: ^E_[A-Z0-9_]+$
+		 */
+		if (error_table[i].errsym == NULL) {
+			fprintf(stderr, "**** %s ERROR: error_table[%zu].errsym is NULL\n",
+				program, i);
+			exit(17);
+		}
+		if (strlen(error_table[i].errsym) < 3) {
+			fprintf(stderr, "**** %s ERROR: error_table[%zu].errsym length: %zu must be >= 3\n",
+				program, i, strlen(error_table[i].errsym));
+			exit(18);
+		}
+		if (strncmp(error_table[i].errsym, "E_", 2) != 0) {
+			fprintf(stderr, "**** %s ERROR: error_table[%zu].errsym: %s must start with E_\n",
+				program, i, error_table[i].errsym);
+			exit(19);
+		}
+		for (p = error_table[i].errsym+2; *p != '\0'; ++p) {
+			if (!isascii(*p) || !(isupper(*p) || isdigit(*p) || *p == '_')) {
+				fprintf(stderr, "**** %s ERROR: error_table[%zu].errsym: %s "
+						"must match the regular expression: %s\n",
+					program, i, error_table[i].errsym, "^E_[A-Z0-9_]+$");
+				exit(20);
+			}
+		}
+
+		/*
+		 * verify errmsg is not empty
+		 */
+		if (strlen(error_table[i].errmsg) <= 0) {
+			fprintf(stderr, "**** %s ERROR: error_table[%zu].errmsg length: %zu must be > 0\n",
+				program, i, strlen(error_table[i].errmsg));
+			exit(21);
+		}
+	}
+
+	/*
+	 * verify the last error_table entry
+	 */
+	if (error_table[len-1].errnum != -1) {
+		fprintf(stderr, "**** %s ERROR: final NULL entry error_table[%zu].errnum: %d != -1\n",
+			program, len-1, error_table[len-1].errnum);
+		exit(22);
+	}
+	if (error_table[len-1].errsym != NULL) {
+		fprintf(stderr, "**** %s ERROR: final NULL entry error_table[%zu].errsym != NULL\n",
+			program, len-1);
+		exit(23);
+	}
+	if (error_table[len-1].errmsg != NULL) {
+		fprintf(stderr, "**** %s ERROR: final NULL entry error_table[%zu].errmsg != NULL\n",
+			program, len-1);
+		exit(24);
+	}
+	return;
+}
+
+
+/*
+ * print_errorcodes - print the help/errorcodes file
+ */
+S_FUNC void
+print_errorcodes(void)
+{
+	/*
+	 * print the help/errorcodes file header
+	 */
+	size_t len;		/* length of the error_table */
+	size_t i;
+
+	/*
+	 * print the help/errorcodes file header
+	 */
+	printf("## DO NOT EDIT - This file was generated by errcode -e via the Makefile\n"
+	       "Calc computation error codes\n"
+	       "\n"
+	       "\"E_STRING\"\terrnum\tCalc computation error message\n"
+	       "----------\t------\t------------------------------\n"
+	       "\n"
+	       "\"E__NONE\"\t%d\tcalc_errno cleared: libc errno codes above here\n"
+	       "\"E__BASE\"\t%d\tReserved for \"No error\" calc internal state\n"
+	       "\n",
+	       E__NONE, E__BASE);
+
+	/*
+	 * print the error message lines
+	 */
+	len = sizeof(error_table) / sizeof(error_table[0]);
+	for (i=1; i < len-1; ++i) {
+		if (strlen(error_table[i].errsym) < 6) {
+			printf("\"%s\"\t\t%d\t%s\n",
+			       error_table[i].errsym, error_table[i].errnum, error_table[i].errmsg);
+		} else {
+			printf("\"%s\"\t%d\t%s\n",
+			       error_table[i].errsym, error_table[i].errnum, error_table[i].errmsg);
+		}
+	}
+
+	/*
+	 * print the help/errorcodes.h file trailer
+	 */
+	printf("\n"
+	       "\"E__HIGHEST\"\t%ld\thighest assigned calc computation error code\n"
+	       "\"E__USERDEF\"\t%d\tuser defined error codes start here\n"
+	       "\"E__USERMAX\"\t%d\tmaximum user defined error code\n",
+	       MY_E__HIGHEST, E__USERDEF, E__USERMAX);
+	printf("\n"
+	       "## Copyright (C) %d  Landon Curt Noll\n"
+	       "##\n"
+	       "## Calc is open software; you can redistribute it and/or modify it under\n"
+	       "## the terms of the version 2.1 of the GNU Lesser General Public License\n"
+	       "## as published by the Free Software Foundation.\n"
+	       "##\n"
+	       "## Calc is distributed in the hope that it will be useful, but WITHOUT\n"
+	       "## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\n"
+	       "## or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General\n"
+	       "## Public License for more details.\n"
+	       "##\n"
+	       "## A copy of version 2.1 of the GNU Lesser General Public License is\n"
+	       "## distributed with calc under the filename COPYING-LGPL.  You should have\n"
+	       "## received a copy with calc; if not, write to Free Software Foundation, Inc.\n"
+	       "## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.\n"
+	       "##\n"
+	       "## Under source code control:   n/a\n"
+	       "## File existed as early as:    n/a\n"
+	       "##\n"
+	       "## chongo <was here> /\\oo/\\     http://www.isthe.com/chongo/\n"
+	       "## Share and enjoy!  :-)        http://www.isthe.com/chongo/tech/comp/calc/\n",
+	       ERRTBL_COPYRIGHT_YEAR);
+	return;
+}
+
+
+/*
+ * print_errsym - print the contents of errsym.h
+ */
+S_FUNC void
+print_errsym(void)
+{
+	size_t len;		/* length of the error_table */
+	size_t i;
+
+	/*
+	 * print the errsym.h file header
+	 */
+	printf("/*\n"
+	       " * DO NOT EDIT - This file was generated by errcode -d via the Makefile\n"
+	       " *\n"
+	       " * Copyright (C) %d  Landon Curt Noll\n"
+	       " *\n"
+	       " * Calc is open software; you can redistribute it and/or modify it under\n"
+	       " * the terms of the version 2.1 of the GNU Lesser General Public License\n"
+	       " * as published by the Free Software Foundation.\n"
+	       " *\n"
+	       " * Calc is distributed in the hope that it will be useful, but WITHOUT\n"
+	       " * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\n"
+	       " * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General\n"
+	       " * Public License for more details.\n"
+	       " *\n"
+	       " * A copy of version 2.1 of the GNU Lesser General Public License is\n"
+	       " * distributed with calc under the filename COPYING-LGPL.  You should have\n"
+	       " * received a copy with calc; if not, write to Free Software Foundation, Inc.\n"
+	       " * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.\n"
+	       " *\n"
+	       " * Under source code control:   n/a\n"
+	       " * File existed as early as:    n/a\n"
+	       " *\n"
+	       " * chongo <was here> /\\oo/\\     http://www.isthe.com/chongo/\n"
+	       " * Share and enjoy!  :-)        http://www.isthe.com/chongo/tech/comp/calc/\n"
+	       " */\n"
+	       "\n"
+	       "\n"
+	       "#if !defined(INCLUDE_ERRSYM_H)\n"
+	       "#define INCLUDE_ERRSYM_H\n"
+	       "\n"
+	       "\n",
+	       ERRTBL_COPYRIGHT_YEAR);
+	printf("#define E__NONE\t\t%d\t/* calc_errno cleared: libc errno codes above here */\n"
+	       "#define E__BASE\t\t%d\t/* Reserved for \"No error\" calc internal state */\n"
+	       "\n",
+	       E__NONE, E__BASE);
+
+	/*
+	 * print the #define lines
+	 */
+	len = sizeof(error_table) / sizeof(error_table[0]);
+	for (i=1; i < len-1; ++i) {
+		if (strlen(error_table[i].errsym) < 8) {
+			printf("#define %s\t\t%d\t/* %s */\n",
+			       error_table[i].errsym, error_table[i].errnum, error_table[i].errmsg);
+		} else {
+			printf("#define %s\t%d\t/* %s */\n",
+			       error_table[i].errsym, error_table[i].errnum, error_table[i].errmsg);
+		}
+	}
+
+	/*
+	 * print the errsym.h file trailer
+	 */
+	printf("\n"
+	       "#define E__HIGHEST\t%ld\t/* highest assigned calc computation error code */\n"
+	       "#define E__COUNT\t%ld\t/* number of calc computation error codes w/o E__BASE */\n"
+	       "#define E__USERDEF\t%d\t/* user defined error codes start here */\n"
+	       "#define E__USERMAX\t%d\t/* maximum user defined error code */\n",
+	       MY_E__HIGHEST, MY_E__COUNT, E__USERDEF, E__USERMAX);
+	printf("\n"
+	       "\n"
+	       "#endif /* !INCLUDE_ERRSYM_H */\n");
+	return;
+}
+
+
+int
+main(int argc, char *argv[])
+{
+	extern char *optarg;		/* argv index of the next arg */
+	extern int optind;		/* argv index of the next arg */
+	int e_flag = 0;			/* 1 ==> -e flag was used */
+	int d_flag = 0;			/* 1 ==> -s flag was used */
+	int i;
+
+	/*
+	 * parse args
+	 */
+	program = argv[0];
+	while ((i = getopt(argc, argv, "hed")) != -1) {
+		switch (i) {
+		case 'h':
+			fprintf(stderr, usage, program);
+			exit(2);
+		case 'e':
+			e_flag = 1;
+			break;
+		case 'd':
+			d_flag = 1;
+			break;
+		default:
+		    fprintf(stderr, "**** %s ERROR: invalid command line\n", program);
+			fprintf(stderr, usage, program);
+			exit(3);
+		}
+	}
+	if (e_flag && d_flag) {
+		fprintf(stderr, "**** %s ERROR: -e and -d conflict\n", program);
+		fprintf(stderr, usage, program);
+		exit(3);
+	}
+
+	/*
+	 * verify the consistency of the error_table
+	 */
+	 verify_error_table();
+
+	/*
+	 * -e - print the contents of help/errorcodes
+	 */
+	if (e_flag) {
+		print_errorcodes();
+	}
+
+	/*
+	 * -d - print the contents of errsym.h
+	 */
+	if (d_flag) {
+		print_errsym();
+	}
+
+	/*
+	 * All Done!!! -- Jessica Noll, Age 2
+	 */
+	exit(0);
+}
+
+
+#endif /* ERRCODE_SRC */
diff --git a/errtbl.h b/errtbl.h
new file mode 100644
index 0000000..3ac2c20
--- /dev/null
+++ b/errtbl.h
@@ -0,0 +1,68 @@
+/*
+ * errtbl - calc error code table entry
+ *
+ * Copyright (C) 2023  Ernest Bowen and Landon Curt Noll
+ *
+ * Calc is open software; you can redistribute it and/or modify it under
+ * the terms of the version 2.1 of the GNU Lesser General Public License
+ * as published by the Free Software Foundation.
+ *
+ * Calc is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.	See the GNU Lesser General
+ * Public License for more details.
+ *
+ * A copy of version 2.1 of the GNU Lesser General Public License is
+ * distributed with calc under the filename COPYING-LGPL.  You should have
+ * received a copy with calc; if not, write to Free Software Foundation, Inc.
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Under source code control:	2023/09/12 20:55:14
+ * File existed as early as:	2023
+ *
+ * Share and enjoy!  :-)		http://www.isthe.com/chongo/tech/comp/calc/
+ */
+
+
+#if !defined(INCLUDE_ERRTBL_H)
+#define INCLUDE_ERRTBL_H
+
+
+#include "have_const.h"
+#include "decl.h"
+
+
+/*
+ * primary error code defines
+ */
+#define E__NONE 0		/* calc_errno cleared: libc errno codes above here */
+#define E__BASE 10000		/* calc errors start above here */
+#define E__USERDEF 20000	/* user defined error codes start here */
+#define E__USERMAX 32767	/* maximum user defined error code */
+
+
+/*
+ * calc error code, error symbol and error message
+ */
+struct errtbl {
+	int errnum;		/* calc error code or -1 */
+	char *errsym;		/* error symbol string - must match the regular expression: ^E_[A-Z0-9_]+$ or NULL */
+	char *errmsg;		/* calc error message or NULL */
+};
+
+
+/*
+ * The error_table[] array represents the calc computation error related
+ * error codes, symbols and messages.
+ *
+ * The errnum of the 1st entry error_table[0] must be E__BASE.
+ *
+ * All errnum for the following entries just be consecutive,
+ * except for the final NULL entry.
+ *
+ * The final entry must have an errnum of -1, errsym of NULL and errmsg of NULL.
+ */
+EXTERN CONST struct errtbl error_table[];	/* calc error codes, error symbols and error messages */
+
+
+#endif /* !INCLUDE_ERRTBL_H */
diff --git a/file.c b/file.c
index e9fa782..adf6a78 100644
--- a/file.c
+++ b/file.c
@@ -43,7 +43,7 @@
 #include "have_fpos_pos.h"
 #include "fposval.h"
 #include "file.h"
-#include "calcerr.h"
+#include "errsym.h"
 #include "strl.h"
 
 #if defined(_WIN32) || defined(_WIN64)
diff --git a/func.c b/func.c
index 369703b..296dbbf 100644
--- a/func.c
+++ b/func.c
@@ -93,7 +93,8 @@
 #include "have_const.h"
 #include "have_unused.h"
 #include "calc.h"
-#include "calcerr.h"
+#include "errsym.h"
+#include "errtbl.h"
 #include "opcodes.h"
 #include "token.h"
 #include "func.h"
@@ -132,7 +133,6 @@ S_FUNC int malloced_putenv(char *str);
  * external declarations
  */
 EXTERN char cmdbuf[];				/* command line expression */
-EXTERN CONST char *error_table[E__COUNT+2];	/* calc coded error messages */
 E_FUNC void matrandperm(MATRIX *M);
 E_FUNC void listrandperm(LIST *lp);
 E_FUNC int idungetc(FILEID id, int ch);
@@ -175,7 +175,7 @@ STATIC NUMBER _qfourhundred = { { _fourhundredval_, 1, 0 },
 /*
  * user-defined error strings
  */
-STATIC short nexterrnum = E_USERDEF;
+STATIC short nexterrnum = E__USERDEF;
 STATIC STRINGHEAD newerrorstr;
 
 #endif /* !FUNCLIST */
@@ -8081,11 +8081,11 @@ f_newerror(int count, VALUE **vals)
 		str = vals[0]->v_str->s_str;
 	if (str == NULL || str[0] == '\0')
 		str = "???";
-	if (nexterrnum == E_USERDEF)
+	if (nexterrnum == E__USERDEF)
 		initstr(&newerrorstr);
 	index = findstr(&newerrorstr, str);
 	if (index >= 0) {
-		errnum = E_USERDEF + index;
+		errnum = E__USERDEF + index;
 	} else {
 		if (nexterrnum == 32767)
 			math_error("Too many new error values");
@@ -8131,7 +8131,7 @@ f_strerror(int count, VALUE **vals)
 		i = E__BASE;
 
 	/* firewall - return generic error string if it is not assigned */
-	if (i >= nexterrnum || (i > E__HIGHEST && i < E_USERDEF)
+	if (i >= nexterrnum || (i > E__HIGHEST && i < E__USERDEF)
 			|| (i < E__BASE && strerror(i) == NULL)) {
 		size_t snprintf_len;	/* malloced snprintf buffer length */
 		snprintf_len = sizeof("Unknown error 12345678901234567890")+1;
@@ -8151,12 +8151,12 @@ f_strerror(int count, VALUE **vals)
 		cp = strerror(i);
 
 	/* user-described error */
-	} else if (i >= E_USERDEF) {
-		cp = namestr(&newerrorstr, i - E_USERDEF);
+	} else if (i >= E__USERDEF) {
+		cp = namestr(&newerrorstr, i - E__USERDEF);
 
 	/* calc-described error */
 	} else {
-		cp = (char *)error_table[i - E__BASE];
+		cp = (char *)error_table[i - E__BASE].errmsg;
 	}
 
 	/* return result as a V_STR */
@@ -12105,11 +12105,11 @@ showerrors(void)
 {
 	int i;
 
-	if (nexterrnum == E_USERDEF)
+	if (nexterrnum == E__USERDEF)
 		printf("No new error-values created\n");
-	for (i = E_USERDEF; i < nexterrnum; i++)
+	for (i = E__USERDEF; i < nexterrnum; i++)
 		printf("%d: %s\n", i,
-			namestr(&newerrorstr, i - E_USERDEF));
+			namestr(&newerrorstr, i - E__USERDEF));
 }
 
 
diff --git a/help/Makefile b/help/Makefile
index 7576e57..ac7c58c 100644
--- a/help/Makefile
+++ b/help/Makefile
@@ -247,8 +247,7 @@ SINGULAR_FILES= binding bug change errorcode type
 # These files are found (but not built) in the distribution
 #
 DISTLIST= ${STD_HELP_FILES} ${DETAIL_HELP} ${MAKE_FILE} \
-	obj.file builtin.top builtin.end funclist.sed \
-	errorcodes.hdr errorcodes.sed
+	obj.file builtin.top builtin.end funclist.sed
 
 # These files are used to make (but not built) a calc .a link library
 #
@@ -361,10 +360,9 @@ contrib: ../CONTRIB-CODE
 	    ${TRUE}; \
 	fi
 
-errorcodes: ../calcerr.h errorcodes.hdr errorcodes.sed
+errorcodes: ../errcode${EXT}
 	${RM} -f $@
-	${CAT} errorcodes.hdr > $@
-	${SED} -n -f errorcodes.sed < ../calcerr.h >> $@
+	../errcode${EXT} -e > $@
 	${CHMOD} 0444 $@
 	-@if [ -z "${Q}" ]; then \
 	    echo ''; \
@@ -639,8 +637,7 @@ detail_help_list:
 		 ! -name archive ! -name assoc ! -name builtin.end \
 		 ! -name builtin.top ! -name command ! -name config \
 		 ! -name contrib ! -name credit ! -name custom ! -name define \
-		 ! -name environment ! -name errorcodes.hdr \
-		 ! -name errorcodes.sed ! -name expression ! -name file \
+		 ! -name environment ! -name expression ! -name file \
 		 ! -name funclist.c ! -name funclist.sed ! -name help \
 		 ! -name history ! -name interrupt ! -name intro ! -name list \
 		 ! -name mat ! -name obj.file ! -name operator \
diff --git a/help/errno b/help/errno
index c4fec84..b37cdb0 100644
--- a/help/errno
+++ b/help/errno
@@ -2,10 +2,11 @@ NAME
     errno - return or set a the global calc_errno value
 
 SYNOPSIS
-    errno([errnum])
+    errno([errnum | "E_STRING"])
 
 TYPES
     errnum	integer
+    E_STRING	string
 
     return	integer
 
@@ -68,6 +69,8 @@ LIMITS
 LINK LIBRARY
     int calc_errno;	/* global calc_errno value */
 
+    E_STRING is C string matching the regular expression: "^E_[A-Z0-9_]+$"
+
 SEE ALSO
     errmax, errcount, error, strerror, iserror, newerror, errorcodes,
     stoponerror
diff --git a/help/error b/help/error
index f3c7d3f..19488d5 100644
--- a/help/error
+++ b/help/error
@@ -2,10 +2,11 @@ NAME
     error - raise a calc error condition
 
 SYNOPSIS
-    error([errnum])
+    error([errnum | "E_STRING"])
 
 TYPES
     errnum	integer, defaults to errno()
+    E_STRING	string
 
     return	null value or error value
 
@@ -74,10 +75,13 @@ DESCRIPTION
     The following constants are part of the calc error code mechanism:
 
 	E__BASE == 10000			# 1 less than the 1st calc computation error code
-	E_USERDEF == 20000			# User defined error codes start
-	E_USERMAX == 32767			# maximum user defined error code
-	E__BASE < E__HIGHEST < E_USERDEF	# How E__HIGHEST is bounded
-	E__COUNT == E__HIGHEST - E__BASE	# Number of calc computation error codes
+
+	E__COUNT				# number of calc computation error codes (not including E__BASE)
+	E__HIGHEST				# highest assigned calc computation error code
+
+	E__USERDEF == 20000			# user defined error codes start here
+	E__USERMAX == 32767			# maximum user defined error code
+
 
     See help errorcodes for the actual values of the above constants.
 
@@ -111,6 +115,8 @@ EXAMPLE
 LIMITS
     0 <= errnum <= 32767
 
+    E_STRING is C string matching the regular expression: "^E_[A-Z0-9_]+$"
+
 LINK LIBRARY
     int calc_errno;	/* global calc_errno value */
 
diff --git a/help/errorcodes.hdr b/help/errorcodes.hdr
deleted file mode 100644
index d36d441..0000000
--- a/help/errorcodes.hdr
+++ /dev/null
@@ -1,25 +0,0 @@
-Calc generated error codes (see the error help file):
-
-## Copyright (C) 1999,2023  Landon Curt Noll
-##
-## Calc is open software; you can redistribute it and/or modify it under
-## the terms of the version 2.1 of the GNU Lesser General Public License
-## as published by the Free Software Foundation.
-##
-## Calc is distributed in the hope that it will be useful, but WITHOUT
-## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-## or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
-## Public License for more details.
-##
-## A copy of version 2.1 of the GNU Lesser General Public License is
-## distributed with calc under the filename COPYING-LGPL.  You should have
-## received a copy with calc; if not, write to Free Software Foundation, Inc.
-## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-##
-## Under source code control:	1995/12/18 03:19:11
-## File existed as early as:	1995
-##
-## chongo <was here> /\oo/\	http://www.isthe.com/chongo/
-## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/
-    0		calc_errno cleared: libc errno codes above here
-    10000	calc errors start above here
diff --git a/help/errorcodes.sed b/help/errorcodes.sed
deleted file mode 100644
index 0757b3a..0000000
--- a/help/errorcodes.sed
+++ /dev/null
@@ -1,23 +0,0 @@
-/^#define E_[^_].*[	 ][1-9][0-9]*[	 ]\/\* .* \*\//s/#define E_.*[	]\([1-9][0-9]*\)[	 ]*\/\* \(.*\)[	 ][	 ]*\*\//    \1	\2/p
-
-## Copyright (C) 1999  Landon Curt Noll
-##
-## Calc is open software; you can redistribute it and/or modify it under
-## the terms of the version 2.1 of the GNU Lesser General Public License
-## as published by the Free Software Foundation.
-##
-## Calc is distributed in the hope that it will be useful, but WITHOUT
-## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-## or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
-## Public License for more details.
-##
-## A copy of version 2.1 of the GNU Lesser General Public License is
-## distributed with calc under the filename COPYING-LGPL.  You should have
-## received a copy with calc; if not, write to Free Software Foundation, Inc.
-## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-##
-## Under source code control:	1995/12/18 03:19:11
-## File existed as early as:	1995
-##
-## chongo <was here> /\oo/\	http://www.isthe.com/chongo/
-## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/
diff --git a/help/newerror b/help/newerror
index 032b516..d13d3f0 100644
--- a/help/newerror
+++ b/help/newerror
@@ -66,9 +66,11 @@ EXAMPLE
     triangle side length <= 0: 20000
 
 LIMITS
-    The number of new described error-values is not to exceed E_USERMAX-E_USERDEF
+    The number of new described error-values is not to exceed E__USERMAX-E__USERDEF
     (which is usually 12767 calls to the newerror function).
 
+    E_STRING is string matching the regular expression: "^E_[A-Z0-9]+$"
+
 LINK LIBRARY
     none
 
diff --git a/help/strerror b/help/strerror
index c4d1e0a..6596e69 100644
--- a/help/strerror
+++ b/help/strerror
@@ -2,10 +2,11 @@ NAME
     strerror - returns a string describing an error value
 
 SYNOPSIS
-    strerror([errnum])
+    strerror([errnum | "E_STRING"])
 
 TYPES
     errnum	integer
+    E_STRING	string
 
     return	string
 
@@ -78,6 +79,8 @@ EXAMPLE
 LIMITS
     0 <= errnum <= 32767
 
+    E_STRING is C string matching the regular expression: "^E_[A-Z0-9_]+$"
+
 LINK LIBRARY
     int calc_errno;				/* global calc_errno value */
     CONST char *error_table[E__COUNT+2];	/* calc coded error messages */
diff --git a/matfunc.c b/matfunc.c
index 953df17..b5a9dd5 100644
--- a/matfunc.c
+++ b/matfunc.c
@@ -31,7 +31,7 @@
 #include "alloc.h"
 #include "value.h"
 #include "zrand.h"
-#include "calcerr.h"
+#include "errsym.h"
 
 #include "have_unused.h"
 
diff --git a/trailblank b/trailblank
index f79310a..3a77934 100755
--- a/trailblank
+++ b/trailblank
@@ -47,11 +47,10 @@ LEADING_SPACES_BEFORE_TAB=$(
 	      -name '*.orig' -o -name '*.rej' -o -name '*.bak' -o \
 	      -name '*.ptch' -o -name 'core.*' -o \
 	      -name '*.so*' -o -name 'calc-static' -o -name 'libcalc.*' -o \
-	      -name 'sample_many' -o -name 'sample_rand' -o \
+	      -name 'sample_many' -o -name 'sample_rand' -o -name 'errcode' -o \
 	      -path './help/funclist' -o -path './have_stdvs' -o \
 	      -path './endian' -o -path './no_implicit' -o -name 'chk_c' -o \
 	      -path './longbits' -o -name '.*.swp' -o -name 'conf.h' -o \
-	      -path './help/errorcodes.sed' -o -path './cal/set8700.line' -o \
 	      -name '.git' -o -path './custom/libcustcalc*' -o -path './libcustcalc*' -o \
 	      -name 'sample_many-static' -o -name 'sample_rand-static' -o \
 	      -name 'codeql-analysis.yml' -o -name tags -o -name debug.out \
@@ -79,11 +78,10 @@ TRAILING_WHITESPACE=$(
 	      -name '*.orig' -o -name '*.rej' -o -name '*.bak' -o \
 	      -name '*.ptch' -o -name 'core.*' -o \
 	      -name '*.so*' -o -name 'calc-static' -o -name 'libcalc.*' -o \
-	      -name 'sample_many' -o -name 'sample_rand' -o \
+	      -name 'sample_many' -o -name 'sample_rand' -o -name 'errcode' -o \
 	      -path './help/funclist' -o -path './have_stdvs' -o \
 	      -path './endian' -o -path './no_implicit' -o -name 'chk_c' -o \
 	      -path './longbits' -o -name '.*.swp' -o -name 'conf.h' -o \
-	      -path './help/errorcodes.sed' -o -path './cal/set8700.line' -o \
 	      -name '.git' -o -path './custom/libcustcalc*' -o -path './libcustcalc*' -o \
 	      -name 'sample_many-static' -o -name 'sample_rand-static' -o \
 	      -name 'codeql-analysis.yml' -o -name tags -o -name debug.out \
@@ -102,7 +100,7 @@ fi
 # Some of these files must have long lines.  Some of these files may not exist.
 #
 if [[ -x /usr/local/bin/picky ]]; then
-    PICKY_PHASE_0A=$(/usr/local/bin/picky -w -s -v ./help/errorcodes.sed ./cal/set8700.line \
+    PICKY_PHASE_0A=$(/usr/local/bin/picky -w -s -v ./cal/set8700.line \
 						   .gitignore README.md .lldbinit 2>&1)
     status="$?"
     if [[ $status -ne 0 ]]; then
@@ -121,12 +119,12 @@ if [[ -x /usr/local/bin/picky ]]; then
 	    EXIT_CODE=4
 	fi
     fi
-    if [[ -e calcerr.h ]]; then
-	PICKY_PHASE_0C=$(/usr/local/bin/picky -w -s -v calcerr.h 2>&1)
+    if [[ -e errsym.h ]]; then
+	PICKY_PHASE_0C=$(/usr/local/bin/picky -w -s -v errsym.h 2>&1)
 	status="$?"
 	if [[ $status -ne 0 ]]; then
 	    echo
-	    echo '# picky failed on calcerr.h'
+	    echo '# picky failed on errsym.h'
 	    echo "$PICKY_PHASE_0C" | sed -e 's/\.\///'
 	    EXIT_CODE=5
 	fi
@@ -150,16 +148,13 @@ PICKY_PHASE_1=$(
 	      -name '*.orig' -o -name '*.rej' -o -name '*.bak' -o \
 	      -name '*.ptch' -o -name 'core.*' -o \
 	      -name '*.so*' -o -name 'calc-static' -o -name 'libcalc.*' -o \
-	      -name 'sample_many' -o -name 'sample_rand' -o \
+	      -name 'sample_many' -o -name 'sample_rand' -o -name 'errcode' -o \
 	      -path './help/funclist' -o -path './have_stdvs' -o \
 	      -path './endian' -o -path './no_implicit' -o -name 'chk_c' -o \
 	      -path './longbits' -o -name '.*.swp' -o -name 'conf.h' -o \
-	      -path './help/errorcodes.sed' -o -path './cal/set8700.line' -o \
 	      -name '.git' -o -path './custom/libcustcalc*' -o -path './libcustcalc*' -o \
 	      -name 'sample_many-static' -o -name 'sample_rand-static' -o \
-	      -name 'codeql-analysis.yml' -o -name tags -o -name debug.out \
-	      -o \
-	      -path './help/errorcodes.sed' -o -path './help/errorcodes.sed' -o \
+	      -name 'codeql-analysis.yml' -o -name tags -o -name debug.out -o \
 	      -name '.gitignore' -o -name 'README.md' -o -name '.lldbinit' \
 	   \) -prune -o -type f -print0 | \
     if [[ -x /usr/local/bin/picky ]]; then
diff --git a/value.h b/value.h
index a10c608..7d9cc8f 100644
--- a/value.h
+++ b/value.h
@@ -33,7 +33,7 @@
 # include "cmath.h"
 # include "config.h"
 # include "sha1.h"
-# include "calcerr.h"
+# include "errsym.h"
 # include "hash.h"
 # include "block.h"
 # include "nametype.h"
@@ -43,7 +43,7 @@
 # include <calc/cmath.h>
 # include <calc/config.h>
 # include <calc/sha1.h>
-# include <calc/calcerr.h>
+# include <calc/errsym.h>
 # include <calc/hash.h>
 # include <calc/block.h>
 # include <calc/nametype.h>