U+20E3 COMBINING ENCLOSING KEYCAP

Title should be: Wiz Waz

Sure. If I select the word “Gift”, how much work does it need to decide whether it's English? How much more context does it need, and where does it get it? What if it guesses wrong and doesn't show the translation button?

How would it know?

> With today’s wide screens, a vertical menu bar at the side would perhaps make more sense than the usual one at the top, though, similar to vertical tabs.

That's what NeXTSTEP did for application menus, along with right-click context menus (which MacOS X did keep).