Where can I find the names of the various settings dialogs?

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http://askubuntu.com – I'm using xmonad, so I can't see the regular Ubuntu menu to get to the tools in the settings and preferences menus. I have to invoke them by name. Does anyone have a list of the names of these tools? (so that they could be started from the command line) In particular, I need the Network Proxy Settings tool. (HowTos)