I investigated the public Schema.org vocabulary, the Dublin Core Metadata Element Set, the HTML living standard and SVG 1.1 to make it easy for map makers and publishers to advance the markup they publish. With an understanding of geographic web maps as documents of composite structure i want to share and discuss a LeafletJS implementation representing this investigation. Building on the descriptive markup and this model of a geographic web map i also want to share the idea of developing a user dialog which could support readers of maps in analyzing WHO contributed WHERE, WHEN - and WHAT is the map about. The Leaflet.annotate API can be seen as an interface proposal for other authoring tools or geographic content management systems and with that I hope to contribute to a discussion around accessible and responsible publishing of geographic maps on the WWW.