Quote Originally Posted by Renathras View Post
Regarding Key Items Tab:

People always feel like that tab is extra inventory. It isn't. It's a visual representation of a checklist. As far as the game is concerned, those aren't "items". The game just has a checkbox either checked or unchecked if you have access to "thing X". I'm not even sure it has a limit. That is, if you somehow managed to fill all three tabs and get another item, I'm not sure what would happen
One extra point of clarification: Key Items don't even have a designated number of "tabs." The apparent size of your Key Item "inventory" is entirely dependent on your inventory display settings. You see three Key Item tabs because your inventory is set to display fully expanded, so the Key Item tab simply stretches to fit the rest of the inventory display. With a normal inventory display, Key Items only has one apparent "tab."

Which only further demonstrates that it is in no way typical usable "space," as the display settings dictate how empty it appears.