Already with the beta version of Minecraft 1.8 is the ability to create something new. Not spared by different teams. Let's see what offers us this resource. After applying the addon, You can use the following commands: /function invulnerable - makes You invulnerable /function tools - gives one set of diamond tools /kit function - creates a chest with useful items inside /function over_powered - impose a variety of effects, including strengthening the capacity /function of the strike  on a selected portion causes lightning to fight incessantly. /function clear - clears the player's inventory and all its imposed effects, and removes the eternal storm. If You forget any command, use /function help or /help2 function and displays a list of all available. Presented Supplement is great for survival mode. And You can create your own commands "/function". Just open the package behavior in the folder and you will see many files. Click on one of them and displayed the text. There You will be able to write the command you want using the template. You'll be able to add new files, just make sure that the extension is ".mcfunction" with any name. The file name must match the team, for example, if You specify in the file test, this name will be used /function (Command),  and will look like /function test.