NAME
    freeglobals - free memory used for values of global variabls

SYNOPSIS
    freeglobals()

TYPES
    return	null value

DESCRIPTION
    This function frees the memory used for the values of all global
    and not unscoped static variables by assigning null values.
    The oldvalue (.) is not freed by this function.

EXAMPLE
    > global a = 1, b = list(2,3,4), c = mat[3]
    > static a = 2
    > show globals

    Name    Level    Type
    ----    -----    -----
    a          1     real = 2
    a          0     real = 1
    b          0     list
    c          0     matrix

    Number: 4
    > freeglobals()
    > show globals

    Name    Level    Type
    ----    -----    -----
    a          1     null
    a          0     null
    b          0     null
    c          0     null

    Number: 4

LIMITS
    none

LIBRARY
    none

SEE ALSO
    free, freestatics, freeredc