https://www.youtube.com/watch?v=eI4WzZsXt9o

What It Does

This tool helps you turn any of the following hand-drawn objects into perfect geometric ones:

• Lines
• Ovals / Circles
• Rectangles / Squares
• Triangles / Polygons
• Curves

How to Use It

With the tool selected, you can do any of the following:

Draw a shape

Do any of the following:

• Draw the rough shape in one stroke (i.e. without lifting your stylus). The shape will be corrected as soon as you lift your stylus.
• Draw the rough shape in one stroke, but hold your stylus tip at the end of the stroke. As soon as the shape is corrected, if you keep holding the stylus and move its tip, the shape will change accordingly. This method also works with The Pen Tool.

Modify / Move a shape

1. While the Pen, Highlighter, or Shape Tool is selected, finger-tap the shape to select it.
2. Adjust the blue control points of the shape.

How to Customize It

As with all tools, you can tap the tool again to access its settings.