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1. The parameter must be disabled (false) by default (NOTE: starting with SIMP 6).
2. The parameter must honor booleans and Strings where the Boolean true and the String 'simp' amount to the same action.
   1. Welcome to the Trevorian type "Stroolean." 
   2. The String value such as 'simp' will translate into the filename in the subsystem  path simp/<subsystem>/simp.pp 
      1. This is intended to permit backwards compatibility between SIMP versions if they require mutually exclusive logic (i.e., 'simp', 'simp4', 'simp4_2', 'simp5', etc.,).
      2. QUESTION: what is the benefit of these files over the ::params pattern? 
         ANSWER: 
         1. it allows n parallel configuration tracks to coexist without conflicting
         2. it separates SIMP-specific settings from the rest of the module.
3. The parameter must allow for an ENC or Hiera or straight parameter, since we want maximum module uptake where possible.

   1. This will look something like the following:

          $simp_firewall = defined('$::simp_firewall') ? { true => getvar($'::simp_firewall'), default => hiera('simp_firewall',true) }

      Translation:

          $parameter => { <if set> => <use global/ENV variable>, <otherwise> => <use what's in Hiera or default to true> } 

      1. QUESTION: Should we make this defined->hiera->default logic a function in simplib?
         ANSWER: Yeah, probably. How about.....simp_def('variable','default')
      2. QUESTION: Why not just lookup()?
         ANSWER: lookup() was introduced in Puppet 4.  The core SIMP modules will need to support Puppet 3.x for at some time (at least another major version, probably longer).
4. The default parameter lookup will reference the associated Global Catalyst.

Advanced Module Structure

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