Now it’s possible to change the pointed vertices of polygon to rounded polygon by inserting arc. This feature is implemented in the Copper and Copper Relief section. For this select the stretch item function tool and select insert round miter option tool. Now clicking on a polygon vertex the radius popup band appears. Choose the appropriate radius; the pointed vertex will get replaced with an arc of specified radius. Also remove miter and remove arc options are available. The remove miter option deletes the arc and the polygon vertex appears as it was before inserting arc. When option remove arc is taken and click on an arc vertex, the arc get replaced with a line linking the end points of arc.