Yao

Map shortcuts: Zoom out: hyphen. Zoom in: plus. Pan right 80 pixels: right arrow. Pan left 80 pixels: left arrow. Pan up 80 pixels: up arrow. Pan down 80 pixels: down arrow. Pan right 240 pixels: shift + right arrow. Pan left 240 pixels: shift + left arrow. Pan up 240 pixels: shift + up arrow. Pan down 240 pixels: shift + down arrow.