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+.. This work is licensed under a
+.. Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+.. (c) 2015-2017 AT&T Intellectual Property, Inc
+
+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.
+
+   * - YANG
+     - A data modeling language used to model configuration and state data manipulated by the Network Configuration Protocol  (NETCONF), NETCONF remote procedure calls, and NETCONF notifications.
+
+
+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
+
+   * - NFVI
+     - Network Function Virtualization Infrastructure
+
+   * - TOSCA
+     - Topology and Orchestration Specification for Cloud Applications
+
+   * - NETCONF
+     - Network Configuration Protocol