I guess I found something in the percussion notation key window.

As a drummer, the percussion setting was not only convenient but quite handy while using Sonar 7, but in X1, I'm not sure that it is intended or it is just some kind of a bug. The staff lines are missing! So while I match the midi note with the display, I'm a little like frustrated. Only notes are floating over the blank surface.
 

 
Except that one, Sonar X1's interface is amazing. thanks!