The extension is installed by downloading it from the repository and activating it in the extension manager.
Before you start using the extension you must change the settings of the extension in the extension manager:
Editor width: Set this to change the width of the textarea when you're editing ascii files.
Editor heigth: Set this to change the height of the textarea when you're editing ascii files.
FTP root folder: Absolute path to your home directory on the server.
Visual style: visual style for panels and dialogs.