Tab

  Inserts blanks and tabs to move the cursor to the current indentation
  level (if at the beginning of the line) or to move the cursor to the
  next tab stop as set by the /TAB_INCREMENT qualifier on the DEFINE
  LANGUAGE command or by the SET TAB_INCREMENT command.

  If the current indentation level is set to the beginning of the line
  and the cursor is at the beginning of the line, the Tab key
  inserts enough blank space to move the cursor to the first tab stop.
  In contrast, the Enter Tab key has no effect when both the
  cursor and the current indentation level are at the beginning of the
  line.

  Command Equivalent:

          TAB

  Related Topics:

          ENTER TAB
 	 SET TAB_INCREMENT
 	 UNTAB