6/26    In emacs20 c-mode, how do I tell it to indent with an amount other than
        two columns?
        \_ M-x apropos indent
           \_ Yeah I did that, but I couldn't find anything that I could set
              to tell it to indent by every four columns when I press the
              <TAB> key.  Any more hint?
                \_ c-set-offset.  read:
                   info emacs/ccmode/Customizing Indentation