Curve
Overview
Provides a way of drawing a curve.
How To Use
Standard Curve
Put two points on a surface so that an edge will be drawn.
Move the mouse up and down to make a partial arc and then when the arc gets a shape which you want, press the left mouse button.
The region created by drawing an arc can be edited like the below picture.
Bezier Curve
Put two points on a surface so that an edge will be drawn.
By holding Shift, the curve type will change to Beizer.
The region created by drawing a curve can be edited like the below picture.