Echo voice over window content verses say all from cursor point

[VaShaun Jones]

I was doing some thinking and most people say that the say all command  
is VO A. In theory this is correct, but if it is echoing the window  
that VO has focus on then it is safe to assume that on a web page that  
it will read the whole thing. I almost bet that if you have a command  
that reads from the cursor to the end of text that it will solve this  
problem. Does anyone know of such a keystroke?