Pre-defined System attributes are organised in various Tinderbox listings into 15 groups:
- AI.
- Agent.
- Appearance.
- Composites.
- Events.
- General.
- Grid.
- HTML.
- Internal (not accessible via the UI)
- Iris
- Map.
- Net.
- Outline.
- People.
- References.
- Sandbox.
- Scrivener.
- Sorting.
- Storyspace.
- TextFormat.
- Textual.
- Watch.
- Weblog.
- User.
A number of system attributes are Read-only and cannot be altered by users:
- Read-only System Attributes.
- Attributes inherited from Document Settings.
- Attributes which are intrinsic. (What is 'intrinsic'?)
- System Attributes Internal group (In XML only, not exposed to UI)
There is also a full reference listing of attributes. There is a small hidden group ('Internal') of system attributes that are not UI-accessible and only used internally by Tinderbox.