In the spec we have this example, that includes "//*" in a path, which is not currently supported by AQL:
EHR e CONTAINS
OBSERVATION o [openEHR-EHR-OBSERVATION.blood_pressure.v1]
On https://discourse.openehr.org/t/aql-new-feature-suggestion-descendant-paths/320/4 most agree on this is not currently supported so I suggested to remove the example from the spec and keep it on the WIKI for further discussion of the "descendant path" feature, use cases (if any), etc.
Done in PR