Previous / Next Query Buttons

I use Sybase SQL editor quite a bit and a feature that I have really found useful is a set of buttons what will let me quickly cycle through query statement history via Previous and Next buttons. It appears to me that the information for doing this is readily available in the Query History table on the right. It would just be a matter of adding the buttons (or even hotkeys) and keeping track of where you are at in the query list. There may already be a way to do this via a hotkey but I have not been able to find it.