I'm not really interested in the source code, I just want to know what the programs do.
Well, OK, off the top of my head:
cxcplinfo - Gets the list of installed control panel applets. cxinstallfonts - Installs fonts. cxmanip - Used by the GUI frontend to access the registry and filesystem, and edit drive mappings. cxmklnk - Creates .lnk shortcuts. cxnative - Invokes native (unix) commands from within the Wine environment. cxwget - Downloads files while showing a GUI progress bar. reboot - Simulates a reboot; I'm not clear on the difference between this and wineboot. winewrapper - Half of the implementation of CrossOver's "wine" binary, which does a lot of fancy stuff (the other half is perl code).