LINE  (0)
 ----
 Moves the cursor forward or backward to the nearest beginning of a line,
 depending on the current direction (see ADVANCE and BACKUP).

 OPEN LINE  (GOLD 0)
 ---------
 Inserts a carriage return/linefeed after the cursor and leaves the cursor
 position unchanged.  Pressing the OPEN LINE key when the cursor is at the
 beginning of the line creates a new blank line.