anchor.diff:  
   Use the `memory` attribute to specify the memory limit for all instances of an app. This attribute requires a unit of measurement: `M`, `MB`, `G`, or `GB`, in upper case or lower case. For example:
   
  -~~~
  -memory: 1024M
  -~~~
  +<pre>
  +---
  +  ...
  +  memory: 1024M
  +</pre>
   
   The default memory limit is 1G. You might want to specify a smaller limit to conserve <%=vars.quota_resource%> if you know that your app instances do not require 1G of memory.
   
  
positive.code: 
  Every child manifest must contain an “inherit” line that points to the parent manifest. Place the inherit line immediately after the three dashes at the top of the child manifest. For example, every child of a parent manifest called `base-manifest.yml` begins like this:
  
  ~~~
  ---
  inherit: base-manifest.yml
  ~~~
  
  You do not need to add anything to the parent manifest.
  
  
negative.code: 
  Notice how much content in the manifest below has been promoted in this way.
  
  <pre>
  ---
  # all applications use these settings and services
  domain: <%=vars.app_domain%>
  