plsesc: Set the escape character for text strings

plsesc (esc);

Set the escape character for text strings. From C (in contrast to Fortran 77, see plsescfortran77) you pass esc as a character. Only selected characters are allowed to prevent the user from shooting himself in the foot (For example, a "\" isn't allowed since it conflicts with C's use of backslash as a character escape). Here are the allowed escape characters and their corresponding decimal ASCII values:

esc (char, input)

Escape character.

Redacted form:

This function is used in example 29.