Objects can be moved on the screen by dragging them with a finger, made bigger or smaller by spreading or pinching them with two fingers, and discarded with a flick off the screen's edge.

Spreading the investment in this manner has enabled the BBC to maintain its position at the leading edge of technology, delivering breathtaking images of cinematic breadth and forensic precision.

Compared with traditional edge driving system, the new type edge driving system has obvious advantages, and it is worth spreading.