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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

THIS FILE IS IN USE BY ANOTHER USER OR
APPLICATION.
 
The file you attempted to open is already in use
by another user or by another program on a
network. You might also be running OS/2 or
Windows with a SHARE.EXE running.
 
■ Wait until the user or program finishes with
  the document before you open it.