anchor.diff:        autoconf
         automake110x
         automake19x
  -      ghc
         libtool
         libxml2
         libxslt
  
positive.code:       w3m
        wget
        wirelesstools
        wxHaskell
        x11_ssh_askpass
        xchm
        xfig
  
negative.code:       kvm
        less
        lftp
        libtool
        libxml2
        libxslt
  