Specialise Section

This optional section indicates that the archetype is a specialisation of some other archetype, whose identity must be given. Only one specialisation parent is allowed, i.e. an archetype cannot 'multiply-inherit' from other archetypes. An example of declaring specialisation is as follows:

archetype (adl_version=2.0.5; rm_release=1.0.2)
    openEHR-EHR-OBSERVATION.cbc.v1.0.0
specialise
    openEHR-EHR-OBSERVATION.haematology.v1

Here the identifier of the new archetype is derived from that of the parent by adding a new section to its domain concept section. See the ARCHETYPE_ID definition in the identification package in the openEHR Support IM specification.

Note that both the US and British English versions of the word "specialise" are valid in ADL.

The following syntax validity rule applies in the specialisation section:

SASID: archetype specialisation parent identifier validity. for specialised artefacts, the identifier of the specialisation parent must conform to the ARCHETYPE_ID identifier syntax defined in the openEHR Support IM specification.