Can a button be created that zooms the toolpath display either in or out?

this is on my wish list as well...maybe even zoom and pan to a given area in the Gcode...let say if you could send zoom to:  X0,Y0,Z0 or something like that would be cool

I know its not what you want, but button 318 toggles pan and zoom, which could kind of work like the function you're after... at least for a touch screen.  although i havent done that in Flash.