Course index
The course index is the collapsible drawer on the left of the screen in Boost and Boost-based themes. It displays course sections and elements. As you move up and down the central course area, your location is highlighted in the course index. Clicking on an item in the course index will open it up directly in the course central area.
Activities and resources which are indented in the course page are also indented in the course index.
Text and media areas also display in the course index and take the name from the field in the Text and media area if added, or the first few words of the area.
With edit mode on, teachers can drag and drop items up and down directly in the course index (or by drag and drop from the central area to the selected location in the course index)