Could you hover tooltips above all buttons and other items with mouse-hover?

Podrian incluir una opcion de adjuntar documento

Descrizione

I would underline the option for implement standard-shortcuts like Ctrl+S for Safe ... and so on - of course in windows-inviroments. 

Please !! Add this very simple but extremely useful feature. We asked for it 4 years ago also. 

In creating an event on the calendar, sometimes it would be nice to attach a file or a scanned invitation, etc.