state controller: NULL right usage?

[Jessy]

I ask what if the right usage of that NULL used sometimes instead Changestate, I think worked in similar way...then I ask...when can be used too...

[Cobra Caddie]

People use null when they temporarily wanna disable a state controller. So the purpose of it is, for example, if you wanna disable a changestate to test something in the state. It works for replacing all state controllers, and is easier than putting a ; in front of all the lines, and is better than deleting everything and then having to retype it all to put it back.

[GT]

Some ppl use null in order to assign variables with the ":=" operator.

[Cyanide]

Null is still evaluated. It just doesn't do anything. So if you have a bad trigger in a null sctrl. It'll still crash. Or cause debug. The most common use is instead of varsets

type = null
trigger1 = time = 0 && var(0) := 3
trigger2 = time = 0 && var(5) := 1
trigger3 = time = 0 && var(2) := 2
trigger4 = time = 0 && var(8) := 9