[Atomskun]

Android had this "Option" key until Google decided to blindly follow Apple.

Today, an artifact of this feature is still accessible by holding the Back button for a long time, but it is set to simply show the Overflow menu (if the App has one).

I wish so much that Android would have sticked with it. Similarly, many Windows notebooks swap the right Ctrl with a "Context Menu" key. It basically lets you right click with the mouse, but it could have had so much more potential ...