Alt+J is a keyboard shortcut most often used to adjust the justification of text in a file.
Alt-J is also a band that got their name from a shortcut originally used to create the Greek letter delta (Δ) on an Apple computer.
How to use the Alt+J keyboard shortcut
Alt+J in Nano
In the Nano text editor, Alt+J justifies the entire file.
Related keyboard shortcuts and keys
Below are links to related keyboard shortcuts and individual key pages.