anchor.diff:  // language options: END
   
   
  -== Samples:
  +== Example
  +
  +In the example below we want to set a header with the patent id
  +from field QRD-8 in the QRY_A19 message:
   
   [source,java]
   ----
  
positive.code: 
  === Custom Acknowledgement for MLLP
  
  In particural situations you may want to set a custom acknowledgement without using Exceptions.
  This can be achieved using the `ack` expression:
  
  [source,java]
  
negative.code: 
  *Since Camel {since}*
  
  https://hapifhir.github.io/hapi-hl7v2/[HAPI] provides a
  https://hapifhir.github.io/hapi-hl7v2/base/apidocs/ca/uhn/hl7v2/util/Terser.html[Terser]
  class that provides access to fields using a commonly used terse
  location specification syntax. The HL7 Terser language allows to use this
  syntax to extract values from HL7 messages and to use them as expressions
  and predicates for filtering, content-based routing etc.
  
  == HL7 Terser Language options
  