Archetype Model openEHR Archetype Model Component Specifications Archetype Technology Overview Archetype Definition Language 2 (ADL2) Archetype Object Model 2 (AOM2) Operational Template 2 (OPT2) Archetype Identification Archetype Definition Language 1.4 (ADL1.4) Archetype Object Model 1.4 (AOM1.4) Archetype Technology Overview