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    FreeFiles()

         Returns the number of available DOS File Handles

    Syntax:

         FreeFiles() -> nFiles

    Description:

         Returns the number of available DOS File Handles as a numeric value.

    Return:

         A numeric value of the number of available DOS File Handles.

    Example:

         If FreeFiles() < 20
           BoxWarning ( "I'm sorry but you must have 20 files" )
         EndIF
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