List Lines command

    Purpose:  Displays a specified range of lines. The current line remains
              unchanged.

    Format:   [line][,line]L

    Remarks:  Default values are provided if either one or both of the para-
              meters are omitted. If you omit the first parameter, as in:

              ,lineL

              the display starts 11 lines before the current line and ends
              with the specified line. The beginning comma is required to
              indicate the omitted first parameter.

                 Note:
                 If the specified line is more than 11 lines before the cur-
                 rent line, the display is the same as if you omitted both
                 parameters.

              If you omit the second parameter, as in:

              lineL    or    line,L

              a total of 23 lines are displayed, starting with the specified
              line.

              If you omit both parameters, as in:

              L

              a total of 23 lines are displayed - the 11 lines before the
              current line, the current line, and the 11 lines after the
              current line. If there aren't 11 lines before the current
              line, then extra lines are displayed after the current line
              to make a total of 23 lines.

              If the current line is line 15, and you want to display a
              range of lines, from 3-18, enter:

              3,18L

              If you want to display 23 lines of the file, starting with
              line 3, enter:

              3L

              If you want to display 23 lines of the file, centered around
              the current line, enter:

              L