- [Hot code reload](feedback_hot_reload.md) — save files and user hot-reloads; don't build while Editor is running
- JSON keys in .t3 and .t3ui files use PascalCase (uppercase first letter), e.g. `"Settings"`, `"RenderExport"`, `"PlaybackSettings"`
- [File format versioning](file_format_versioning.md) — increment `SymbolFormatVersion.Current` when completing features that change .t3/.t3ui format