Reference
If you have questions about the Android API, please search Android API Reference page.
Stylus page talks about input events related to tablet, specifically Wacom Intuos, on Chromebook.
For note-taking apps, please check this page to register your app as a note-taking app or test it without a stylus.
See Also
Overview – Information on the Android API
Basics – Details on tablet specific Android API
Reference – Links to the complete Android API packages and classes
FAQs – Useful Android programming tips
Sample Code – Full Android API demo sample