Revcloud

Operations:

Step 1: click the “Draw” button and select the “Revcloud” command;

Step 2: specify the start point of Revcloud by touching on the drawing area, move the finger that touching on drawing area to specify other vertexes of Revcloud, as the finger moving, it will create all other vertexes automatically. All vertexes are connected by arcs forming a Revcloud shape.

Step 3: end this command by lifting the finger.

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