CodeView (cv.hlp) (Table of Contents; Topic list)
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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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
CodeView Error
     Cannot open \SEM\CVP (CV3607)
 
     The required semaphore could not be opened.
 
     When debugging multiprocess programs, CodeView tries to access
     areas of shared memory for interprocess communication.
 
     The failure to open a semaphore may be due to lack of memory or
     to having too many OS/2 processes running at one time.
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