Find the full documentation for SDK7 in the SDK7 section of the documentation.
Using the playground
To easily try out SDK7, visit the playground. Write SDK7 code on the left of the screen, and see the resulting scene on the right. As you change the code, the scene is updated automatically.
If you run into any issues, please copy a URL to the current setup of your scene with the Share button, and report an issue including that link to your code.