Examples of program source code are much easier to read if reserved words, comments, identifiers and so on are highlighted as they are in a modern programming editor. Help+Manual's Syntax Highlighting function does this for you. It understands the syntax of a total of 53 different code languages, so yours is almost certainly among them. You can also define up to three different custom formatting sets.
The highlighter is pre-configured with standard formatting for all these languages, but you can change the formatting yourself for every element type in every language to suit your own preferences. (Note that you must do this before applying your formatting. Changing highlighting settings does not change the formatting of code that has already been highlighted.)