# Collection Tag

> A formal definition of the tag for a file that defines a grouped set of domain members and the operations over the set, filed in a collections folder.

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

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Envelope Tag](https://banes-lab.com/records/lexicon/envelope-tag.md) and before [Buffer Tag](https://banes-lab.com/records/lexicon/buffer-tag.md).

## Category

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