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+Definitions
+===========
+.. list-table:: Definitions
+   :widths: 15 85
+   :header-rows: 1
+
+   * - Term
+     - Meaning
+
+   * - State
+     - Information that can be used to convey or imply the state of something, e.g. an application, resource, entity, etc. This can include data held inside OPNFV components, "events" that have occurred (e.g. "policy violation"), etc.
+
+   * - Event
+     - An item of significance to the policy engine, for which the engine has become aware through some method of discovery e.g. polling or notification.
+
+Abbreviations
+=============
+.. list-table:: Abbreviations
+   :widths: 15 85
+   :header-rows: 1
+
+   * - Term
+     - Meaning
+
+   * - CRUD
+     - Create, Read, Update, Delete (database operation types)
+
+   * - FCAPS
+     - Fault, Configuration, Accounting, Performance, Security
+
+   * - NF
+     - Network Function
+	 
+   * - SFC
+     - Service Function Chaining
+
+   * - VNF
+     - Virtual Network Function