In-Game Wiki Mod

The In-Game Wiki Mod (sometimes abbreviated as IGW Mod) is a client-side mod by MineMaarten. It supplies the player with guides and information from mods without needing to exit the game.. The mod has information about Minecraft blocks, items, entities and gameplay, and is compatible with mods like PneumaticCraft, Compact Machines and ExtraCells 2. Unfortunately, it has a very little amount of vanilla documentation.

Usage
To enter the IGW screen, press the  key (by default). The mod displays information about the block or mob the player is looking at when the player presses the mod's keybind.