Exactly what I was looking for.

I needed a way of presenting some data in multiple locations, being a web developer I knew I could use variables but didn’t want to edit the core app or theme, so this fitted my requirements like a glove, only one bug, when you enter a variable name but not a value and save, it says save successful, but it doesn’t actually save, this need a check for data, its a minor thing, once I figured out why my newly entered variables.