Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

An invalid expression has been used to assign a value to a
symbolic constant.
 
Numeric expressions assigned to symbolic constants can
contain:
   ■ Numeric literals.
   ■ Previously defined symbolic constants.
   ■ Any of the arithmetic or logical operators except
     exponentiation.
 
String expressions assigned to a symbolic constant may
consist only of a single literal string, enclosed in double
quotation marks.