Deep reference for building a document project - the file formats and processing pipeline underneath the in-app editors covered in UI Reference.

• Document Project Structure - the project folder, what each file is for, the two ways to build (in-app vs. by hand).
• Layout JSON - overlay.json and other layout partials, how process.js composes them, multi-page.
• Scripting & Processing - validate.js, process.js, the full generation pipeline, and how to debug when something doesn't show up right.
• Generating Grid Data - building a grid block's data from a repeating group.
• Autocomplete JSON - the autocomplete.json format.
• Command-Line Launch Options - desktop kiosk/ unattended deployment.
• Troubleshooting

For the in-app editors themselves (Form Editor, Layout Editor, etc.), see UI Reference.