This document should detail the schema(s) such that the overall design is logical for someone new to OpenEHR and will allow incremental updates and improvements
For example you might have
- A common structures.xsd which contain strucures used through out the rest of the schemas
- An ontology.xsd
- An archetype.xsd
The design should be reasonably modular and logical and Schemas should try and only contain those structures pertinent to them.