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This section will look at commands that have to do with the Opus Desktop, whether it be a screen or window. There are only nine commands that either influence or obtain information from Opus regarding the Desktop. They are:- dopus back dopus front These two commands just move the Opus Desktop to the front or back, useful for showing a user that there is something to see or that requires their attention on the Desktop. dopus screen Returns information regarding Opus' screen name, screen size/depth and default lister size. dopus query Let's you get information on the current backgrounds, sounds, palette, pens and fonts. It is the complement to the dopus set command. dopus set This command is used extensively for the Opus themes system. If you have some themes installed you will find plenty of additional examples of the usage of this command in the D5Themes: directory. Every (name).theme file is an ARexx script containing many dopus set commands. dopus getdesktop dopus checkdesktop dopus matchdesktop These three commands allow you to manipulate the Opus Desktop to a limited degree. It is not the same as the dopus set command, they do not affect the look of the Desktop, rather they can help you to add programs to the Desktop. dopus desktopopup This command causes the Desktop popup menu to appear under the mouse, allowing the user to choose from one of the choices.