The arc length of cut in arc is as setting.
There are two types of cut in/cut out arc，as shown in the following figure
The processing of setting cut out lines is same as cut in lines.
2.13.3 Path Optimization
Path optimization is primarily to re-order the vector graphics.
Click menu【Handle】->【Cut optimize】，or click ,the following dialog box is appears.
Click menu【Edit】->【Show Path】，or click
processing.
，can see the cutting path before and after
