qperr.hlp (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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
Error Message
 
Error 4:  Too many nested files
 
The program nests include files too deeply. If the files
included must include other files, keep the nesting to a
maximum depth of eight files.
 
Convert some of the include files to units.