Clearing the UI command card... easy access to spellbooks?

I just thought some people might find a use of this discovery.
Maybe some of you knew about it already though!

When you go inside a spellbook through the command card as you have a unit selected then make a trigger select another unit lacking of a spellbook for you, your command card will become blank and you won't be able to fix it without selecting the unit manually or calling the ForceUICancel function. Additionally if the trigger-selected unit had the spellbook ability it will be displayed on the command card instead, as if you had manually gone inside it after selecting the unit.

I have a question about the first case. Say you have a spell book with some abilities in it and then you trigger-select a unit without spellbook. Will it completely clear it or will the abilities in the spell book appear. If it is the latter, then I can see so many uses for it. Other wise, meh, ward classification is just as good.

Are you asking if there is a way to display abilities on the command card the currently selected unit doesn't have? In this case I think the answer is no. You can jump through spell books that have the same Base Order ID, and as you keep going through units lacking of spellbook it still stays on it.
I realize that if you find any good use for this it will be pretty limited, as a matter of fact this was recently bugging me when I was making a system that was trigger-selection oriented since it was not an intended feature.
Also while the first use is not really desirable, this somewhat allows you to keep regular movement while both hiding the move UI and displaying custom abilities given a custom selection system.
Actually most might aswell consider this as something to know about the selectunit function.

Well, my intent was to hide the REALLY annoying UI buttons (eg. patrol, move, hold position etc) so that there is more room for actual abilities without it looking messy with the cancel button on the bottom right.