Use monospaced text for file paths, file names, variable names, commands, or anything else that you might expect to be typed or to read on a command line or terminal.

Processing tags:

<p5></p5>

Use p5 tags above for inline Processing code (only inside normal flow text). For example when talking about some Processing commands or variables (e.g. noise()) these will automatically be syntax coloured and hooked up with their respective reference page. The editor toolbar has a special button for this now too.

Add a to any page which you think needs more work (so you can search for fixme to see what needs working on).

Begrudgingly, it makes sense to use American English for Processing hacks, even though its hosts are in the UK. That's because Processing uses American English for its variables and functions, color being one example, and writing about manipulating colour using the color datatype would be needlessly pedantic.