Another thing introduced in the recent Communities upgrade is the inclusion of a "syntax highlighter"
Programmers and developers should find useful when providing or including code in a Communities forum post or blog or wiki article. To take advantage of this, simply follow these steps:
The result will be something like this:
Please note Communities Updates performed over the weekend modify instructions above slightly using a single unified rich text editor where the SyntaxHilighter tool can be found in this new location: