Sets the position of the centre of guiding box in CCD pixels
2=to: 2!:}Format: GUIWIND <x> <y>
2=to: 2!:}Example: GUIWIND 235 120
2=to: 2!:}Defaults: X and Y default to the position of the currently selected star.
2=to: 2!:}Comments: This can be used to reacquire the guide star when the telescope is moved by an accurately known amount, or to start guiding at a predetermined position. At prime focus the the entire guiding box must be within the fibre window.