that's the display for timecodes of your sources. click on the wrench at the bottom right of the program monitor and see if you can figure it out. I'm not on my editing system at the moment. if you can't figure it out, post back and I'll find it.
Okay thanks a lot will try later tonight, I think someone below may have solved it too.
As mgrenadier suggests it's in the wrench tool drop down menu in the program panel - the one to turn off is 'overlays'
Thanks I will try this !
Right click on your program monitor and deselect overlays.
Thank you I will try this later tonight!