Hi All!
I have searched the next 3 features, but I haven't found it. I think, these are not available. If it's true, these are my tips on new version.
1., Save all layers as a jpg
2., Two keyboard-shortcuts, what I can switch the currently layer(Up and down).
3., One keyboard-shortcuts, what I can enable or disable the currently layer's visibility.
Thanks the answer.
Have a nice day!