This is the basis of CNC. Have you never learned it? T101 is the compensation of tool No. 1 and tool No. 1. T102 is the No. 1 knife and the No. 2 knife repair. For example, you plan to use tool No. 1 to process parts in two processes (turn around after processing). If you use a knife to make up for it, you need two procedures, right? If you use two knife compensations, just use one program.