# Polyfill Tag

> A formal definition of the tag for a file that supplies a platform feature where the running platform lacks it, filed in a polyfills folder.

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

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

## Category

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