nano, like Pico, is keyboard-oriented, controlled with control keys. For example, Control-O saves the current file; Control-W goes to the search menu. nano puts a two-line "shortcut bar" at the bottom of the screen, listing many of the commands available in the current context. For a complete list, Control-G gets the help screen.
Unlike Pico, nano uses meta keys to toggle its behavior. For example, Meta-S toggles smooth scrolling mode on and off. Almost all features that can be selected from the command line can be dynamically toggled.
nano can also use pointer devices, such as a mouse, to activate functions that are on the shortcut bar, as well as position the cursor.
Read more about this topic: GNU Nano
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