anchor.diff:     gridExtra_2.2.1.tar.gz \
      ggdendro_0.1-20.tar.gz \
      mnormt_1.5-5.tar.gz \
  -   psych_1.6.12.tar.gz \
  +   psych_1.7.3.21.tar.gz \
      broom_0.4.2.tar.gz \
      reshape_0.8.6.tar.gz \
      prettyunits_1.0.2.tar.gz \
  
positive.code:    http://archive.linux.duke.edu/cran/src/contrib/gridExtra_2.2.1.tar.gz \
     http://archive.linux.duke.edu/cran/src/contrib/ggdendro_0.1-20.tar.gz \
     http://archive.linux.duke.edu/cran/src/contrib/mnormt_1.5-5.tar.gz \
     http://archive.linux.duke.edu/cran/src/contrib/psych_1.6.12.tar.gz \
     http://archive.linux.duke.edu/cran/src/contrib/broom_0.4.2.tar.gz \
     http://archive.linux.duke.edu/cran/src/contrib/reshape_0.8.6.tar.gz \
     http://archive.linux.duke.edu/cran/src/contrib/prettyunits_1.0.2.tar.gz \
  
negative.code:    gridExtra_2.2.1.tar.gz \
     ggdendro_0.1-20.tar.gz \
     mnormt_1.5-5.tar.gz \
     psych_1.7.3.21.tar.gz \
     broom_0.4.2.tar.gz \
     reshape_0.8.6.tar.gz \
     prettyunits_1.0.2.tar.gz \
  