This issue is for discussion of the use case “Display drawings or schematics without geographic coordinates”, its examples & list of required capabilities.

Per discussions with @satakagi at TPAC, an important level of progressive enhancement of the <map> element could be "deep zooming" of non-georeferenced technical drawings, such as schematics of microprocessors etc.

Recently the "WGS84" projection in MapML was extended to support tile resolutions at different zoom levels. Is this projection adequate for this use case?