Programmer's WorkBench (pwb.hlp) (Table of Contents; Topic list)
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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
PWB Error
 
     Invalid mark name
 
     A request was made to set a mark, but the mark name is not valid.
 
     A mark name cannot be a number, and it cannot contain spaces.
                                    -♦-