Brings you out of an enclosing WHILE, REPEAT, or FOR loop.  If an
     integer  parameter n is supplied, then EXITLOOP brings you out of
     n levels of loops.

 Format:

     EXITLOOP [n]

     Example:

     DBG> WHILE 1 DO (STEP; IF X .GT. 3 THEN (EXITLOOP))

Additional information available:

Parameters

 n

     An integer specifying how many levels of loops to exit from.