being fed by the state before. The simplest policy can have
just one state. We provide specific support for the
four-state `MEDA (Match Establish Decide
- Act) <https://ieeexplore.ieee.org/document/7502880>`__
+ Act) https://ieeexplore.ieee.org/document/7502880`
policy state model and the three-state `ECA (Event Condition
Action) <https://en.wikipedia.org/wiki/Event_condition_action>`__
policy state model. APEX is fully distributed. You can