Improve help files

Minor improvement of various help files.  Made format of help
files more consistent.

help/systime

@@ -19,13 +19,15 @@ DESCRIPTION
     POSIX system call and so this function will always return 0.
 
 EXAMPLE
+    ; ## NOTE: Your output will likely vary:
+
     The result for this example will depend on the speed of the CPU
     and precision of the operating CPU time accounting sub-system:
 
     ; t = systime();
     ; system("true"),
     ; systime() - t;
-	.001
+	0.001
 
 LIMITS
     On non-POSIX based systems, this function always returns 0.
@@ -36,7 +38,7 @@ LINK LIBRARY
 SEE ALSO
     config, ctime, runtime, systime, time
 
-## Copyright (C) 2006  Landon Curt Noll
+## Copyright (C) 2006,2021  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