EDT Open Line
  Starts a new line at your current position, without moving the cursor.
  Steps:
     1.  Put the cursor where you want to break the line.
     2.  Press the EDT Open Line key (GOLD-KP0).
  Usage notes:
  o  This is useful to create room for adding text in the middle of a line
     or paragraph, or to add a blank line as a paragraph boundary for FILL.
  o  The effect is similar to RETURN except Open Line does not move the
     cursor.  Text beginning with the current character is pushed down,
     starting a new line at the current left margin.
  Example:
     You are editing the following line, with the cursor ([]) on the "t" in
     "three":
        What I tell you [t]hree times is true.
     Pressing the Open Line key results in the following---note that the
     cursor ([]) does not move:
        What I tell you []
        three times is true.