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Public-images-osm logo.svg transformer = auto
Using this tag is discouraged, use windings:auto=yes instead. Edit this description in the wiki page. Edit this description in the data item.
Group: Power
Used on these elements
should not be used on nodesshould not be used on waysshould not be used on areasshould not be used on relations
Useful combination
Status: deprecatedPage for proposal

exclamation mark

This feature has been labeled as deprecated. The recommended replacement is: windings:auto=yes.
The reason is documented in Deprecated features. You are still free to continue to use or interpret this tag as you see fit since OpenStreetMap does not have “banned features”.
Under no circumstances should you (semi-)automatically change “deprecated” tags to something else in the database on a large scale without conforming to the automated edits code of conduct. Any such change will be reverted.

An auto-transformer is not a transformer role but a particular transformer architecture.
Many actual roles could require auto architecture and this property should be combined with proper transformer=* value.

Use windings:auto=yes to state a given transformer is an auto-transformer.

See power=transformer for additional details and how to map directives