FAQ: Frequently asked questions
Common Errors: Frequent error messages explained
Troubleshooting: Having a problem? Check here.
Advanced OpenGL: How to use low-level OpenGL functions in Processing, and other advanced topics.
Supported Platforms: Notes from the PRTAQAC
Command Line: Command line support notes
Export Info and Tips: Application export and present mode
Window Size and Full Screen: Resizing, full screen, multiple monitors
Changes: Differences between 1.x versus 2.x
Report Bugs: Please let us know if something isn't working
Build Instructions: How to build Processing on your favorite platform
Style Guidelines: Code style guidelines, rules, and occasionally explanations
Repositories: Explaining how and why the Processing source is spread across several repositories
Library Overview: How to create a Processing library
Tool Overview: Let me introduce you to your new best friend: Tools
Project List: List of work to be done, and how you can help