Leaving Court for an Unauthorized Reason

[Rich1]

While some may only see this once every few years, I am sarting to see it more regularly -- at least a half dozen times this season. I can understand why questions about it come up because it happens enough to know it is something but not enough to be sure what that something is. And yes, the search option is available but I can see why someone new to the forum would just ask. When somene has come here to learn by asking a question being told to go look in the rule book or do a search may be off-putting.

Now, my question: Since this is occuring a little more often, what do you do when you call it? Do any of you have a hand signal or specific phrase you like to use? Do you call it an "out of bounds" violation or something else?