anchor.diff:  hazard attribution process and infrastructure models flexible to allow
   for expansion to other hazards and new infrastructure sectors.
   
  -SIFRA was developed in [Geoscience Australia (GA)](<http://www.ga.gov.au/)
  +SIFRA was developed in http://www.ga.gov.au/[Geoscience Australia (GA)]
   in support of the agency's vision to contribute to enhancing the resilience
   of communities in Australia and its region.
   
  
positive.code: 
  ## Required packages
  
  [Graphviz](http://graphviz.org/download/)
negative.code: changes will be available in both.
  
  For details of the commands see 
  https://geoscienceaustralia.github.io/sifra/ch03_installation.html[Using docker]
  in the help documentation
  
  
  ### Building the Run Environment Using Anaconda
  
  For simplicity of managing virtual environments and
  package requirements, https://docs.anaconda.com/anaconda/[Anaconda]
  is a good option.
  It is a free Python distribution, and comes with the ``conda`` tool
  which is both a package manager and environment manager. Instructions
  