GNU Nano - alternative to Pico editor

GNU nano is a command-line text-editor, with syntax highlighting for many languages, an experimental undo/redo system, regular expression help support, auto-indent support, and many other otpions. Full customizable by a file conf and bindings. Particularity of keyboard shortcuts for standard actions (save, quit, search/check/replace). GNU nano is designed to be a free replacement for the Pico text editor, part of the Pine email suite.