Want to contribute? Great! First, read this page (including the small print at the end).### Before you contributeBefore we can use your code, you must sign the[Google Individual Contributor License Agreement](https://cla.developers.google.com/about/google-individual)(CLA), which you can do online. The CLA is necessary mainly because you own thecopyright to your changes, even after your contribution becomes part of ourcodebase, so we need your permission to use and distribute your code. We alsoneed to be sure of various other things—for instance that you'll tell us if youknow that your code infringes on other people's patents. You don't have to signthe CLA until after you've submitted your code for review and a member hasapproved it, but you must do it before we can put your code into our codebase.Before you start working on a larger contribution, you should get in touch withus first through the issue tracker with your idea so that we can help out andpossibly guide you. Coordinating up front makes it much easier to avoidfrustration later on.### Code reviewsAll submissions, including submissions by project members, require review. Weuse Github pull requests for this purpose.### The small printContributions made by corporations are covered by a different agreement thanthe one above, the[Software Grant and Corporate Contributor License Agreement](https://cla.developers.google.com/about/google-corporate).