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Could be. At some point, after all of us dish out feedback and they start polishing things, an Options screen will probably be a necessity. Just a matter of 'when'.A possible solution would be to add it to the menu where the "Collapse all categories" and "Expand Categories" are. You could add another menu that was "Retain previous category expand/collapse status" which would save your previous state.
Thanks Sleeper; obviously I hadn't seen that. I posted this thread's link over there and requested they close this one for tidiness.