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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.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 is used to assign a value to a
constant.
 
Remember that expressions assigned to constants may contain
numeric constants, symbolic constants, and any of the
arithmetic or logical operators except exponentiation.
 
A string expression assigned to a constant may consist only
of a single literal string.