**Sources for geodata**
- Wikimedia Commons .map files
- OSM shapes for Wikidata items via https://maps.wikimedia.org/geoshape
- Research other sources. The number of predefined sources could be low, and the users could add more sources that they find valuable.
**Ideas of how to use in Wikidocumentaries**for storing sources found by the users**
- The sources discovered by the users are made available as map data layers with related topics. The exact mechanism remains to be explored. The topic scope cwould be defined by a collaborative project,using shape expressions. for exampleThe ShEx could be directly associated with the source or the source could be associated with a collaborative project, or the topic scope cwhich would be directly attached to the sourcehave a ShEx defining its scope.
- The users could also make a source part of their collection(s), "favourite" the source.
- All of these would be stored in the local Wikibase, but they could be shared in Wikidata if a suitable way exists.
**Ideas of how to use in Wikidocumentaries**
- Data could be extracted from a mapan external source and saved into Wikidata, for example as a new Wikidata item or as the geographic locrepresentation of an existing topic. The source layer would automatically be added as a source.