# Specification Tag

> A formal definition of the tag for a file that declares a required end state or a selection rule as data other code evaluates, filed in a specifications folder.

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

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Domain-Event Tag](https://banes-lab.com/records/lexicon/domain-event-tag.md) and before [Policy Tag](https://banes-lab.com/records/lexicon/policy-tag.md).

## Category

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

## Linked from

- [Refused Tags](https://banes-lab.com/ontology/lexicon/lexicon-category-refused-tags.md)