Spotlight helps to focus attention on a portion of the screen, there are four types of Spotlight: round, rectangular, solid circle, solid rectangle spotlight.
the screen tool used to show the info, to students step by step, the screen shade can be in four directions(up, down, left,right)to shown the content on the whiteboard slowly.
Screen, window, object, part of the screen can be captured to the electronic flip chart page, there are five types of cameras: regional snapshot, a snapshot of irregular region, the object snapshot, the snapshot window, full screen fast snap.