What is the Keyboard shortcut to “untab” in Atom Editor?

Question

When we select lines and hit tab, it moves it to right. How do we do the opposite (move left by tab spaces) ?

Answer 1

In Atom and in most IDEs you can untab by hitting SHIFT and TAB.

Answer 2

Use Ctrl+[ to decrease the indentation and Ctrl+] (which is similar as tab) to increase the indentation. Same is valid in other editors as well.