I was trying to replicate a two layer board, and I realize how good would be if we can rotate the PCB in order to view the PCB from below, i.e. from the bottom layer. This is because I had to make this rotation in my mind in order to duplicate the board in EasyEda. When you have the original board in hand, when you rotate it, the pins and tracks are mirrored, but in Easyeda PCB layout you only have the top layer point of view.
Chrome
75.0.3770.100
OS X
10_14_5
EasyEDA
6.1.52