Okay; found a description of the braille keyboard layhout in Appendix C of the manual. It is clear that the book port is to be oriented with the flash card toward your body; battery compartment at left; headphone and USB jacks at right. It appears that the keys are being described by moving up the left-hand most row, then proceeding down the right, etc. If this is correct, then, say, the middle row, left to right, should be: 2, 5, left, right, backspace, delete. Can someone confirm? Thanks! John