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    Write Lines command

    Purpose:  Writes a specified number of lines to disk from the lines
              being edited in memory. Lines are written beginning with
              line number 1.

    Format:   [n]W

    Remarks:  This command is only meaningful if the file you are editing
              is too large to fit in memory. When you start EDLIN, it reads
              lines into memory until memory is 75% full.

              To edit the remainder of the file not in memory, you must
              write edited lines in memory to disk. Then you can load addi-
              tional unedited lines from disk into memory by using the Ap-
              pend Lines command.

                 Note:
                 If you do not specify the number of lines, lines are writ-
                 ten until 25% of available memory is used. No action is
                 taken if available memory is already less than 25% used.
                 All lines are renumbered so that the first remaining line
                 becomes number 1.