[ubuntu] Where is the "Application menu"?

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http://ubuntuforums.org – Hello. I'm using Ubuntu 12.04LS, and keep seeing references to an "application menu" in the help -- but I can't find this menu anywhere. An application that I just installed using the software center doesn't appear in "Dash home" even after I reboot -- and help tells me that I should find it in the "Applications menu" -- but I can't find that menu it either :( Can anyone tell me where to look to find the application menu? Any guidance appreciated. (Hardware)