The use of Dublin Core metadata was carried over from railML 2. The usage is not documented for railML 3, and the documentation from railML 2 is partly inconsistent and partly not compliant with the Dublin Core standard. Since 2008 there has also existed an [extended set of terms](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/), of which some could be useful in railML. Tasks: - Review existing documentation from railML 2 wiki (including attached PDF) - Consider usability of existing DC elements - Consider adding extended DC terms - Add metadata elements not covered by DC Relates to issues: - #262 Usage of dc:language - #325 Splitting files (could be relevant for dc:hasPart, dc:isPartOf) - #382 New metadata fields for revision management - #571 Add missing wiki pages for DC metadata Forum: - [[railML3] Dublin Core metadata update in railML 3.3](https://www.railml.org/forum/index.php?t=msg&goto=3652) Relevant Dublin Core resources: - [XML schemas to support the Guidelines for implementing Dublin Core™ in XML](https://www.dublincore.org/schemas/xmls/) - [Guidelines for implementing Dublin Core™ in XML](https://www.dublincore.org/specifications/dublin-core/dc-xml-guidelines/) - [Dublin Core™ User Guide](https://www.dublincore.org/resources/userguide/)