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Public-images-osm logo.svg non_existent_levels
To mark level numbers that are not used e.g. 4, 13 Show/edit corresponding data item.
Group: man made
Used on these elements
may be used on nodesmay be used on waysshould not be used on areasshould not be used on relations (except multipolygon relations)
Useful combination
Status: proposed

This tag is used to mark level numbers that are not used, often for regional reasons. These could include 4 or 13, both of which are often skipped in certain regions. For more information see Simple Indoor Tagging.