The plugin requires CMSimple_XH ≥ 1.6.3 and PHP ≥ 5.4.0 with the JSON extension.It is released under GPLv3.
Syntaxhighlighter_XH couldn't be tested so far in various environments. It is a so called beta version. Use with caution!
There is an online demo available. Changes are listed in the changelog. For further details you can read the manual online.