What is the offical name of the third on-screen button?

Question

I am searching for the official name of the third (right) android on-screen button.

The left and middle button are clear:

• Left: Back button
• Middle: Home button
• Right: ???

Please include a reference where the name of the third/right button is stated in your answer.

Answer 1

This is called 'Recents' - you can see info about it here

Answer 2

I don't know if there's an official name, but it's usually called the Task Switcher or Recent Tasks button. If you're writing instructions/manual, you may want to avoid calling it a button since older Android devices don't have a dedicated task switching button (the task switcher on my old phone was accessed by long press on the home button, for example). Instead, try to word it so that it's clear that you want them to switch to another task and leave the specifics for several common ways in various devices on a side track.

Answer 3

Different makes call it different things.

Android calls it the recent apps list (press it, it say's recent apps).