https://gfycat.com/DizzyEnergeticCygnet
I will make it prettier.
(Also: stristr. Since the Windows (and others?) standard library doesn't have it for some reason, I modified code someone put on StackExchange as a stopgap; once I'm ready to get on IRC for the day, we'll discuss attribution/rewriting.)
* Named all the new functions/etc "Platter" instead of "NewList", to make maintenence easier and also because it sounds delicious.
* The code, as a whole, is much cleaner.
* Allows for multiple items under the same heading now, with highlights and spacing consistently handled.
* Allows for picking up where you left off between menus now (assuming the same map is available on multiple screens).
* Defined M_CanShowLevelInList in terms of the two compartmentalised functions cleaved from it, in order to ensure consistency and prevent code duplication.