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─────PWB Extensions─────────────────────────────────────────────────────────
 
  Syntax:  LINE FileLength( PFILE pfFile );
 
  Returns: The number of lines in the given file.
 
  See:     DelFile, fChangeFile, FileNameToHandle, FileRead, FileWrite,
           fSetWindowWithFile, GetPfileFromName, pFileToBottom,
           pFileToTop, RemoveFile, ◄Using Files►
 
     FileLength returns the length in lines of the specified file.
 
     Since line numbers are zero-based, the line number of the last line
     in the file is given by the expression
 
          FileLength( pfFile ) - 1
                                    -♦-