SET(LEFT_MARGIN_ACTION)

  Specifies an action to be taken when the user presses a self-inserting key
  while the cursor is to the left of the left margin.

  Syntax

     SET (LEFT_MARGIN_ACTION, buffer1,
          [program | buffer2 | range | string | learn])

  Parameters

     buffer1              The buffer for which a program is to be activated
                          if the user tries to insert text outside the
                          margin.

     program              The program to be executed if the user tries to
                          insert text outside the margin.  If you do not
                          specify this parameter, the previously defined
                          program is deleted.

     buffer2              The buffer containing TPU statements to be
                          executed if the user tries to insert text outside
                          the margin.  If you do not specify this parameter,
                          the previously defined program is deleted.

     range                The range containing TPU statements to be
                          executed if the user tries to insert text outside
                          the margin.  If you do not specify this parameter,
                          the previously defined program is deleted.

     string               The string containing TPU statements to be
                          executed if the user tries to insert text outside
                          the margin.  If you do not specify this parameter,
                          the previously defined program is deleted.

     learn                The learn sequence to be executed if the user
                          tries to insert text outside the margin.  If you
                          do not specify this parameter, the previously
                          defined program is deleted.

  Related Topics

     SET(RIGHT_MARGIN_ACTION)