anchor.diff:  Example: `CF_INSTANCE_ADDR=1.2.3.4:5678`
   
   ### <a id='CF-INSTANCE-GUID'></a>CF\_INSTANCE\_GUID ###
  -The UUID of the particular instance of the app. Available only to instances on Diego Cells.
  +The UUID of the particular instance of the app.
   
   Example: `CF_INSTANCE_GUID=41653aa4-3a3a-486a-4431-ef258b39f042`
   
  
positive.code: ### <a id='CF-INSTANCE-PORT'></a>CF\_INSTANCE\_PORT ###
  
  The external, or *host-side*, port corresponding to the internal, or *container-side*, port with value [PORT](#PORT).
  For instances on Diego, this value is generally different from the
  [PORT](#PORT) of the app instance.
  
  Example: `CF_INSTANCE_PORT=61045`
  
negative.code: 
  Example: `HOME=/home/vcap/app`
  
  ### <a id='LANG'></a>LANG ###
  LANG is required by buildpacks to ensure consistent script load order.
  
  Example: `LANG=en_US.UTF-8`
  
  ### <a id='memory'></a>MEMORY_LIMIT ###
  The maximum amount of memory that each instance of the application can consume.
  You specify this value in an application manifest or with the cf CLI when
  