Originally Posted by MelC
To maybe help with your first question, assuming it works similarly to a PRS600, try double tapping and dragging the stylus across the text you want to highlight rather than entering the menus to get the highlight screen. It takes some practice but it should allow you to highlight the bottom text without interference and the dialogue box will come up afterwards confirming that you want to highlight it.
I find it a lot easier to highlight and type in related comments in Reader Library on the PC. Then I just export them to the PRS 900. I like my ergonomic MS keyboard much better than the PRS 900 Virtual keyboard.