Above I don't know how to explain it to you. What you need to do is just run the batch under pe, then you could understand everything. Certainly, the some lines under the line you asked also tell what is what. I have to say, my batches have been donloaded and tested by many many people, exceplt Jaclaz last bug feedback, no bug reported. Here is the reference: http://bbs.wuyou.com/viewthread.php?tid=13...;extra=page%3D4