anchor.diff:  create an NS record in the DNS server for *mydomain.com*
   for each address in the delegation set.
   
  -#### <a id='domain-prep'></a> Prepare a Domain ####
  +### <a id='set-env'></a> Set environment variables ###
   
   Next, set environment variables required for deploying to AWS. Create
   a file called `bosh_environment` and add the following, changing the
  
positive.code: Use `source` to set them for the current shell:
  
  <pre class="terminal">
  ~/deployments/cf-example$ source bosh_environment
  </pre>
  
  Run the `bosh aws create` command to generate the receipt files that you use
  
negative.code: creating bucket xxxx-bosh-artifacts
  </pre>
  
  
  ## <a id="validate"></a> Validating Your IaaS Instance ##
  
  