IntervalsCALL INTERVAL : CALL INTERVAL Interval Number
MAKE INTERVAL : MAKE INTERVAL Interval Number
START INTERVAL : START INTERVAL Interval Number,Delay,Count
STOP INTERVAL : STOP INTERVAL Interval Number

INTERVAL EXIST : Return Integer=INTERVAL EXIST(Interval Number)
INTERVAL REG CALL : Return Integer=INTERVAL REG CALL(Interval Number)
IS INTERVAL EXECUTING : Return Integer=IS INTERVAL EXECUTING(Interval Number)