1. Draw straight lines and broken lines: click the loose key to move to the appropriate position and then click.

2. Curve: Click and drag.

3.Shift can draw a straight line in multiples of 45.

1. Add or delete anchor points:

Add Anchor Tool (+): Click the corresponding path segment. (-) Delete

B, using the pen tool: select/select the tool/point to the line segment and click to add the anchor point, otherwise (point to the anchor point and delete it).