NEI Integration includes some other features that can be useful to developers:
Item tooltips (can be toggled and configured in the config file or Forge’s config GUI).Ore Dictionary names, Item IDs (like ‘minecraft:stone’), Fluid Container information, and burn time in furnaces.Loaded mods, registered Entities and Tile Entities, dimensions, Ore Dictionary Entries, chest loot, registered Fluids and related Fluid Containers, and NEI recipe handler class names.Make sure you have already installed Minecraft Forge and Not Enough Items.Locate the minecraft application folder.On windows open Run from the start menu, type %appdata% and click Run.On mac open finder, hold down ALT and click Go then Library in the top menu bar.
Open the folder Application Support and look for Minecraft.