anchor.diff:  The workflow for creating BOSH releases is iterative, and looks like this:
   
     <%= image_tag("release-iterate.png") %>
  -
  -This tutorial walks you through creating and deploying a dev release and then
  -a final release.
  -
  -<!--- You can use the example code to replicate the release we describe in the tutorial. -->
   
   As a matter of principle, BOSH releases:
   
  
positive.code: fundamental elements: jobs, packages, source (which BOSH calls `src`), and
  blobs.
  
  ### <a id="directory-structure"></a> Directory structure on job VMs ###
  
  View the release with `tree`:
  
  
negative.code: 
  ## <a id="prep"></a> Preparation ##
  
  This tutorial walks you through creating and deploying a dev release and then
  a final release.
  
  More than one dev release is typically required before you are ready to do a
  final release.
  For that reason, the tutorial is designed so that you can prepare once (by
  completing the material in this section), then iterate through
  the material about dev releases (Steps 1 through 6) as many times as necessary
  before proceeding to do a final release.
  
  <!--- You can use the example code to replicate the release we describe in the tutorial. -->
  
  ### <a id="compile-time"></a> About compile time ###
  
  When you deploy a release, BOSH creates two kinds of VMs on the target IaaS:
  
  