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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.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
 
     '<file>': invalid PWB extension
 
     An attempt was made to load the indicated file as a PWB extension,
     but it is not a valid PWB extension.
 
     The file is damaged, or it is not a PWB extension.
                                    -♦-