Without arguments or with the ``browse`` command it starts the web-based configuration interface. The web interface allows you to view your functions, variables and history, and to make changes to your prompt and color configuration. It starts a local web server and opens a browser window. When you are finished, close the browser window and press the Enter key to terminate the configuration session.
``fish_config`` or ``fish_config browse`` opens a new web browser window and allows you to configure certain fish settings.
``fish_config prompt show`` demos the available sample prompts.
``fish_config prompt choose disco`` makes the disco prompt the prompt for the current session. This can also be used in :ref:`config.fish <initialization>` to set the prompt.