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Nano is a text editor which runs as a textual application in a terminal window. It comes with ev3dev and can be used from a remote SSH session.

Open the editor by typing nano <file name> into the terminal. You can navigate an open file using the arrow keys.

Ctrl+O : Save current file ("Write out")

Ctrl+X : Exit the editor

Ctrl+Y : Up one page

Ctrl+V : Down one page