anchor.diff:  
   For more information about domains, see [Routes and Domains](./routes-domains.html).
   
  -## <a id='options'></a>Step 4: Determine Deployment Options ##
  +## <a id='options'></a>Determine Deployment Options
   
   Before you deploy, you need to decide on the following:
   
  
positive.code: An app can only bind to a service that has an existing instance in the
  target app space.
  
  ### <a id='defining-options'></a>Define Deployment Options ###
  
  You can define deployment options on the command line, in a manifest file, or
  both together.
  
negative.code: 
  </pre>
  
  