On Broom Closet ending do you have to reset or can you continue to another ending upon exiting the closet? I.e. In a 21 ending no save run could I stop by the broom closet on the way to freedom ending as a casual player might or do the rules require a reset once I'm in the closet? Similar question for Whiteboard.

EDIT: Bothered to actually read the rules. I redact my earlier question.