<< Objectives >>The Canon II projects develops digital learning content in the field of technical theatre history for education, training and independent learning.The project is the successor to the original Canon project. It develops methodologies to accurately describe and digitise collections of artefacts and archives in the fields of lighting design, lighting technology, stage design and sets based on an Open Data structure. The results will benefit educators, learners and collection owners.<< Implementation >>Canon II develops a methodology and ontology for the above fields through peer learning, hands-on workshops, training and collaborative work in the Canonbase database, supported by information science experts to ensure effective links to Open Data collections. The development is based on use cases that are described, digitised and documented in the existing Canonbase. Associated partners bring additional expertise to the project and help disseminate the results.<< Results >>Canon II creates ontologies, documented interoperable data structures, taxonomies and controlled language for the fields we cover. The developed expertise is documented in open source guidelines, help pages, training and training material.The use cases document a variety of cases in the investigated fields and can be used as examples for documentation, but also as a base for course material. The project results will help make collections/archives more discoverable and meaningful to learners.