The Fashion Pen tool and the Adobe pen tool both use paths and anchors when creating lines and shapes in a document. These lines can be filled and closed the same way. Control+Shift+A will release the pen, and anchor handles behave the same way. The main differences with Fashion Pen tool are listed below:
When making a curve, click and drag your curve in the direction you want the curve to go. You will get scalloped edges this way. You do not have to click your last anchor point to change the axis of your next curve as you move forward, simply make your next anchor point and drag the direction you want the curve to go, holding down shift will give you straight lines, not constrain your curve to 45% as in Illustrator.
For additional information or support, please contact the team at support@aquariodesign.com