Hello, I'm back after nearly a year of no minecraft. I lately updated my game, and noticed a few unfinished projects. One of which was supposed to solve having to manually change the amount of bookcases interacting with an enchantment table. Simply press 5 if you want a lvl 5~ enchantment, 10 if you want a lvl 10~, and 15 if you want a 15~. There is also a handy reset button to remove all. Enjoy! (This was inspired by an EthosLab video.)