* View a unit page, which has its own URL
* Components appear within a unit as full previews. Their top bar shows type icon and title on the left, and draft status (if any), tag count, overflow menu, and drag handle on the right.
* Components have an overflow menu within a unit
* Components can be selected within a unit
* When components are selected, the standard component sidebar appears. The preview tab is hidden, since component previews are visible in the main content area.
* Components within a unit full-page view have hover and selected states
* Unit sidebar preview.
* Frontend implementation Drag-n-drop components to reorder them in unit.
