Simple, but powerful!
Creation is when learning is carried out.
There are some gestures that you may miss:
1.a A finger is long pressed to restore the original angle of the page.
2.a Two finger dragging can move the whole page
2.b The relative rotation of the two fingers can rotate the whole page
2.c The two finger moves relatively, and it can zoom in and down the page
3.a Optimization of accuracy control function in the edit menu, tap the circle button again, no movement, rounded down (180.182 to 180.000)
Enjoy the pleasure it brings to you.