Timelines can have adornments. These are in fact shared with the map view of the same container. The 'smart' elements of adornments (querying, etc.) only work in map view and the settings are ignored in timeline view.
Adornments are drawn from the top of the timeline view to the bottom of the bottom timeline band.
Dragging a selected adornment right or left will move it and adjust $StartDate/$EndDate. Dragging the left of right drag-handle of a selected adornment allow separate adjustment of $StartDate/$EndDate
