Sniff is a "Scratch-like" programming language that's designed to help Scratchers move gently from Scratch to more conventional languages. They can start writing programs, without having to learn a new language, because Sniff is based on Scratch.

The creator / coder shows exactly how to use the code with Embedded Adventures' LDP-8008 dual-LED, tri-colour 80 pixel by 8 pixel matrix display. 

The files will be included in the next Sniff release, but in the mean time you can download and install them into your current Sniff system from the website.

Read all about it here: http://www.sniff.org.uk/2014/04/2500-leds.html