Hi, During playback of tracks of my music practice, I decided to delete the first track. Thereafter, I noted a flashing "R" in the display just to the right of the battery charge symbol. When I turned the machine off, it paused and gave me the "writing data" message. When I turned the machine back on, the flashing "R" was gone. Funny thing is that I can't find mention of this in the manual. The R is not pictured anywhere in the manual. Obviously, it appeared because of the edit. Anyone know what it means?