Stella Vision for Java is equipped with the bunch line (parallel line) drawing command, which draws the bunch line smoothly, and the pitch correcting command for the drawn bunch line after the drawing. Furthermore, Stella Vision for Java is equipped with the change corner shape of parallel line command, add or move corner of parallel line command, connect parallel line command, etc. It also has the detect clearance of segments command which inspects the width and the space of parallel line in an instant. It is possible to change the distance from the baseline, the width of the bunch line, the space between the bunch lines. As the set-up by the mouse cursor is available, the foregoing change can be executed instantly by the easy operation. Using the adjust area function,the electric resistance would be unified on each. You can select the corner shape from the three types, and specify the radius of the corner part. In addition, we prepared three types (Open, Line close, Arc close) of the connecting method of edge shape [Correct Pitch] command enables you to edit the bunch line after the drawing and it is possible to change the width, space, and pitch of the bunch lines as your wishes. The edit operation can be executed faster because you can edit the plural bunch lines at one time.