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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.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
 
     build: Invalid extension <name>
 
     An invalid filename extension was specified in a Build rule.
 
     A filename extension in a Build rule must consist of one to three
     characters from the set [a-zA-Z0-9].
                                    -♦-