# Compatibility-Layer Tag

> A formal definition of the tag for a file that presents an old interface on top of a new implementation, filed in a compatibility-layers folder.

Record: `lexicon:compatibility-layer-tag`
Kind: artifact
Layer: [Structural Core](https://banes-lab.com/records/layer/structural-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-compatibility-layer-tag

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Compatibility Tag](https://banes-lab.com/records/lexicon/compatibility-tag.md) and before [Compatibility-Shim Tag](https://banes-lab.com/records/lexicon/compatibility-shim-tag.md).

## Category

- [Infrastructure Concerns](https://banes-lab.com/records/lexicon-category/infrastructure-concerns.md)