After compiling the program, go to cics region and follow as mentioned below...
type as XPED <program name>.
put B in the line command of the program.
press Esc key to clear the screen.
then type the transaction id.
here it will takes you into program and you can go ahead by line by line or break pt to break pt.
From the CICS environemnt u type XPED programname. Then it will directly prompt you to Xpeditor & waits the control at procedure division. ok....