Syntax Anywhere is an addon designed to help developers write documentation. As such, the edit dialog assumes that users have some developer level knowledge of things like html tags and attributes, jQuery selectors and JSON formatted data.
Syntax Anywhere was developed because I needed a better way of writing documentation. I wanted to easily mix text and code examples without hopping about between blocks.
What better way to document it than by using itself!
Please see the Syntax Anywhere User Guide at http://www.c5magic.co.uk/add-ons/syntax-anywhere/user-guide/