- The document discusses using openEHR archetypes to model clinical knowledge and address issues with inconsistent data structures between different clinical software programs. - OpenEHR archetypes allow clinicians to model clinical concepts in a standardized way and support reuse of clinical "knowledge patterns" across different systems and use cases like electronic health records, clinical registries, and clinical decision support. - Examples show how openEHR archetypes can represent common clinical concepts like medications, examinations, assessments, and quality indicators to support use in areas like primary care and aged care.