When you add relations to selected entities in a sketch, you can make multiple selections from the sketch context toolbar without having to redisplay the toolbar.
If you right-click with one or more sketch entities selected, the toolbar that displays stays visible to allow you to add multiple relations. For example, if you have two lines selected, you can you can add vertical and parallel relations to the lines and make them equal without having to make changes in the PropertyManager or redisplay the toolbar.
If you move the pointer away from the context toolbar, it fades out.
If you apply a toolbar option other than a relation - for example, Construction Geometry or Smart Dimension - the context toolbar closes.