Document keyboard shortcuts on Help page

[Arcitec]

It would be great to have a small section on the Help page which describes keyboard shortcuts.

Another user alerted me that I can Ctrl-drag on modules to copy them to other slots. Nothing in the GUI (that I can see) told me that, and it's a really significant feature which would have been great to know under "Help: Keyboard shortcuts".

Are there any other keyboard shortcuts worth mentioning?

Edit: Funny enough, Ctrl-drag works on Coriolis too, and I had no idea. They have a "Keyboard shortcuts" help section, but they don't mention that one either. ;) In fact, they use Ctrl-drag to move and Alt-drag to copy. And I just realized that EDSY has Alt-drag too, which moves the module. Anyway, it's worth documenting this! :)