waila is a mod that can be very interesting for players who install many mods in Minecraft. Its function is to display on-screen information boxes about any block in the vanilla game and about blocks and items added by any mod.
This info box will show us information such as the name of the item, which mod it belongs to and can even show us extended information about mods whose creators have so designated. That is, in the blocks and objects of the technical mods, such as Industrial Craft, it is possible to display the technical data of the machines and systems of the mod, being able to see the data without having to access interface of this machine or system.
How it works is simple, all you have to do is point your Minecraft character’s crosshairs crosshairs at any block or object you want to learn about. Without doing anything, just “look” at the object in question.