Euro Office - Switch Edit mode?

Hi, everyone. I’m currently trying out Euro Office. Documents usually open in a kind of view mode. That’s actually what I want—I think it’s great. But how do I switch to edit mode so I can actually edit a currently open document? I want it to keep opening in view mode on purpose, but I can’t find a button for switching the mode anywhere.

I realize that I can generally configure this in the admin settings to specify whether a document should open in edit or viewer mode. But unfortunately, I can’t switch the mode within the document itself.