Key:windows

Description
used to tag if a building(:part) has windows Show/edit corresponding data item.
Group: properties
Used on these elements
should not be used on nodesshould not be used on waysmay be used on areas (and multipolygon relations)should not be used on relations (except multipolygon relations)
See also
Status: in use

The key =* is mostly used with the value no to indicate that a building=* or building:part=* doesn't have windows.

Rendering

See also