anchor.diff:              }
           }
   
  -### Update or append entity attributes [POST /v2/entities/{entityId}?{op}]
  -
  -<table style="width: 100%; margin: 12px 0 0 0;">
  -<tr><td colspan="2"><strong>Required Parameters</strong></td></tr>
  -<tr><td colspan="2">none</td></tr>
  -<tr><td colspan="2"><strong>Optional Parameters</strong></td></tr>
  -<tr>
  -  <td style="padding-right: 40px; width: 140px;">op</td>
  -  <td>Operation options. Allowed values: <code>append</code>.</td>
  -</tr>
  -</table>
  +### Update or append entity attributes [POST /v2/entities/{entityId}?{options}]
   
   The request payload is an object representing the attributes to append or update. The object follows
   the JSON entity representation format (described in a section above), except that `id` and `type`
  
positive.code: 
  It is important to understand that the relationship of entity and context element is one-to-many. This means that 
  * each context element refers to exactly one entity
  * there can be several context elements  referring to the same entity. The context elements can for example contain different pieces of information about the entity
  
  #### Context Attributes 
  
  
negative.code: * https://github.com/telefonicaid/fiware-orion/issues/1034
  * https://github.com/telefonicaid/fiware-orion/issues/1035
  
  ## Copyright
  
  This specification is licensed under the
  [FIWARE Open Specification License]
  (http://forge.fiware.org/plugins/mediawiki/wiki/fiware/index.php/FI-WARE_Open_Specification_Legal_Notice_%28essential_patents_license%29).
  
  ## Conformance
  
  All the interfaces described by this specification are mandatory and must be implemented in order to be compliant with. 
  
  # Specification
  
  ## Introduction
  
  The FIWARE NGSI (Next Generation Service Interface) API defines 
  
  