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The Context-Aware Knowledge Retrieval (Infobutton) specifications provide a standard mechanism for clinical information systems to request context-specific clinical knowledge from online resources.

The Infobutton Project consists of three specifications that are available on the HL7 Web site:

The content below includes additional guidance that is not part of the official specification.

Hierarchical structure in knowledge response

According to the SOA-based Implementation Guide, the knowledge response payload is based on the IETF Atom Standard. Atom responses include a content feed and one or more content entries. Atom entries can be used to represent multiple documents or document sections returned from a content resource. The SOA-based Implementation Guide includes examples and guidance on representing multiple documents, but not how to represent multiple documents with their subsections as Atom entries. The instructions below explain how to do this in Atom: