Info Displayer can be used for displaying information about your game. You can change the values and toggle visibility anywhere within your code. It already comes with a few built in displayers for displaying simple data.
You can use the built in Basic Displayer or Version Displayer without having to code anything. With them, you can display hardware information, framerate or game's version.
Excluding the built in tools, adding new values is easy. One line of code can give you information to debug in and outside of the editor.