Select the thickness of pen from [Thin], [Medium], and [Thick] in the [Pen] drop-down box.
Click the vertices of a polygonal line in turn on the image.
Control points will be created on the positions you clicked, and a straight line will be drawn between the control points.
Draw a necessary polygonal line by moving the position of the vertex of the polygonal line or changing the length and shape of the line.
Click the starting point of the polygonal line.
Creating control points is complete. The polygonal line will be a closed polygon.
Click [DRAW].
A mask is drawn with the configured polygonal lines.
If you click [ERASE], the mask is erased in the configured polygonal line shape.
Click [OK]. The mask setup is complete.
Clicking [CANCEL] will cancel the setup.