Example with mandatory variables not filled in

<h1>Example with mandatory variables not filled in</h1>

<pre>---
family1:                      # The first family
  var: example
family2:                      # The second family
  var: example
family3:                      # The third family with space
  var: example                # A variable</pre>

<h1>Example with all modifiable variables</h1>

<pre>---
family1:                      # The first family
  var: example
family2:                      # The second family
  var: example
family3:                      # The third family with space
  var: example                # A variable</pre>