WAIT

WAIT FOR { { THREAD thread-ID } . . . }
         { LAST THREAD                }
         { ANY THREAD                 }

Remaining phrases are optional.

 { BEFORE TIME timeout }
 { TEST ONLY           }

 THREAD IN thread-2

 SIZE IN size-item

 STATUS IN status-item

 [ ON EXCEPTION statement-1 ]

 [ NOT ON EXCEPTION statement-2 ]

 [ END-WAIT ]