[Option] code [Value definition] The relative or absolute path and file name of the output file. [Example] /code:MarketingSite.cs [Comments] 
If this option is not used, the generated code is streamed to standard output. If no file name extension is specified or the file name extension is not either "cs" or "vb", the language option must be used. The file name (exclusive of the extension) is also used to form the beginning of the name of a class that derives from DataContext; in this example the class is named MarketingSiteDataContext. The derived class represents the lists and data of the whole Web site, so choose a file name that conveys that meaning. (You can override this naming behavior with an SPMetal Parameters XML file.)