Hi.. I am back again with more question.. After I have tried to play around with RC4 for several times, I found out that the menu Dir Ckpt (Direct Checkpoint), only appear after ATC told us to contact ATC center. So before that, such as when we are still in Dep and App, the Dir Ckpt is not available. So we can not perform skipping waypoint before we contact center. Is it correct? I have created a log file. Where should I upload the files?