Is "checked" a reserved name
I have a custom state for a circle shape in Storyline. I gave the state the name "checked". I'm not sure exactly when it occurs, perhaps when I save or restart, but nonetheless, the trigger that changes this state indicates the state is an invalid name. And I look at the state, and it has autonomously changed the state label to "Selected". I'm not sure where "Selected" came form, I may have used it in the past and be some kind of artefact.
It is not a big deal to change my label, but I was just curious if "checked" was a reserved name, and if so, are there others.