SRS: 1. startup with Windows. 2. support windows 9x, 2000, XP 3. count for key which can be specified by register. 4. count number recorded in an file which path can be specified by register. 5. single instance. 6. run background. 7. 在任何时候，按Alt+S 显示/

在VC++中实现的2维线段的编码裁减,何以扩展到3维线段-In vc++ realize the 2 d line coding cut, extended to 3 d line