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FAQ and Technical Information

Changes in 3.0: What changed in Processing 3.0 from 2.x
Changes: What changed between 1.x and 2.x
Common Errors: Frequent error messages explained
Troubleshooting: Have a problem? Start here.
- Serial Issues
- OpenGL Issues
Advanced OpenGL: Using low-level OpenGL functions in Processing, and other advanced topics
Supported Platforms: Notes from the PRTAQAC
Processing CLI: Command Line Interface: Yes, we have a CLI.
Export Info and Tips: Application export and present mode
Window Size and Full Screen: Resizing, full screen, multiple monitors

Report Bugs: How to let us know if something isn’t working
Repositories: How and why the Processing source is spread across several repositories
Build Instructions: How to build Processing from source
Style Guidelines: Code style guidelines, rules, and occasionally explanations
Library Overview: How to create a Processing library
- Library Basics: The story of building a library, told with examples as parables
- Library Guidelines: Guidelines for developing a Processing library
Tool Overview: What are Tools?
- Tool Basics: How to create a tool from scratch
- Tool Guidelines: Guidelines for creating tools
Examples Overview: How to create Examples packages for the Contribution Manager
Project List: Work to be done, and how you can help