j — Apollo

;
JUMP -- jumps from one portion of an action-list to another.  You can only
        use JUMP within an action-list.  Use it as you would use a GOTO
        statement in a high-level language.  That is, you declare a label
        and then use JUMP to transfer control to the command following the
        label.  J is the legal abbreviation for JUMP.  For example, the
        following macro prints the contents of a linked list.  The label is
        named loop.  The JUMP command appears in the action-list of an IF
        command:

  > MACRO `print_list [      SET `save_head = head;
  _                    loop: EXAMINE head^.car;
  _                          SET head = head^.cdr;
  _                          IF head <> 0 [JUMP loop];
  _                          SET head = `save_head]
  >
Museum
