??? What's some good use cases here
What didn't the old code do that the new code can?
+Some questions we'd like customer use cases to address:
+*: What is the semantic of accounting group quota?
+*:: That is: what does a group quota regulate/limit?
+*:: What is the 'unit' associated with a quota?
+*:: http://erikerlandson.github.com/blog/2012/11/15/rethinking-the-semantics-of-group-quotas-and-slot-weights-claim-capacity-model/
+*: What does it mean for groups to be in a hierarchy?
+*:: How does a parent's quota relate to child quotas?
+*:: How do 'sibling' groups relate to each other, their parent, and their children (if any)?
+
{subsection: High Level Design and Definitions}
