This allows the user to view system attributes and change their default values. The latter is not recommended if you're still new to Tinderbox.
The left pane lists all system attributes for the current Tinderbox document (file). From v5.8.0, group headings are left flush and attributes in the group are indented. Read-only attributes, which the user may not change, are listed in italics and cannot be selected in the list.
If an attribute is selected, the Default value box shows the default value, if any.
Change button. This is designed to allow you to change the default value, for all new notes created after the change.
Individual attributes can be dragged out onto anywhere in a note window to add to existing $KeyAttributes.