Hi! I've been reading this forums for a lot of time and now that I'm almost in possesion of my PRS-505 y want to try to participate a little more..
I don't know but maybe this could help you Kovid.
http://www.ureader.com/message/1018345.aspx
If not, if you could explain what do you want this function to do we could try to help you.
And sorry for my english... :P