Here the user is able to specify which actions will be taken by the program when the file changes. These are specified simply by giving a standard AmigaDOS command. For example, if the file is a script (with the script bit set) simply giving it's name and path will be enough. If the script bit was not set, then you would need to put 'Execute [NAME]' in the string gadget. Standard commands can be run, giving the command and any arguments. The command mode buttons on the right control whether the program is run via the CLI or through Workbench. The checkbox down the bottom determines whether the action is done only upon a change of file state (i.e. 'Old' to 'New') or whenever the file changes (even if this is from 'New' to 'New', as the file grows larger, or 'Old' to 'Old', as the file shrinks again).