Highest Takes Precedence, aka "biggest guy wins." The source of the level with the highest value controls the output. For example: You have a cue running in which channel 18 is at 60%, should you then bring up the fader/submaster for channel 18, unless it goes above 60%, the channel will listen to the pre-recorded cue and not the fader/submaster. Often useful, perhaps, when dealing with an intensity channel, but for other moving light parameter s, not so much. Say the PAN channel of a moving light is 000 SR and 255 SL. Who is to say that SL is "better," or more desirable, than SR? See also LTP.