Digital Illustration 

Using the V1 Pro Window’s suite of analytical drawing tools:
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The Drawing button group contains buttons that allow you to draw reference lines and shapes on top of the video. 

You may also change the line thickness and color, and even add arrowheads to your lines. 

The various drawing tools are used in different ways, as discussing in the following section, How to Draw. 

Function buttons such as Snapshot, Undo, Re-do, and Clear are also found here.