Quote Originally Posted by ZoriaRPG View Post
Eh? Of course you need a subscreen. You can't change the item on A or B to another item without a subscreen, as the 2.50 functions to set Link's equipment make use of the subscreen layout, to page through items until you find the one that you want. Thus, if you want to temporarily substitute an item into B, if you do not have it on the subscreen, or paging through the subscreen in a linear manner would not land upon it, you would not be able to set it.

The default subscreens allow you to cycle through the default items in ZC, if that is what you mean. That is not true, if you add special/new items to a quest. This method is also horrific and slow, as it requires iterating the subscreen objects, and that does quite a lot (internally).
I'm well aware of all of that. But the options are limited. If someone adds an item to the default subscreen and don't match the behavior to it, they're an idiot. I can't help the stupidity of others. The quest developer needs to understand how this works and adjust their quest accordingly. If there are improvements I can make to this for an official ZC release let me know and I will try to get to it before school starts up again and sucks me back into the void.