1 To set Notpad as the default text editor use the menu item Options -> File Associations -> Check Now. This will present a dialog allowing you to select which file types to be opened with Notpad. The file types Notpad allows you to associate with it are: TXT, INI, BAT, INF, REG & CMD. To set up other file associations with Notpad you can use the menu item View -> Options in Explorer.
2 On the same File associations dialog the Add to Send Menu will adds a shortcut for Notpad to the Explorer Send To Menu.
3 The Add Explorer Speech menu items will adds two items to Explorer context menus to allow Notpad to speak the contents of the file selected.
4 The Add an App Path entry to the registry allows Notpad to be run from anywhere in Explorer just by typing Notpad.