# Concern Folder

> A facility that holds every file of one concern and whose label the file's concern tag must equal.

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

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Container Level](https://banes-lab.com/records/lexicon/container-level.md) and before [Subject Folder](https://banes-lab.com/records/lexicon/subject-folder.md).

## Category

- [Taxonomy / Classification / Naming](https://banes-lab.com/records/lexicon-category/taxonomy-classification-naming.md)

## Required by

- [Concern-Folder Correspondence](https://banes-lab.com/records/architecture/concern-folder-correspondence.md)
- [Mirrored Test Placement](https://banes-lab.com/records/architecture/mirrored-test-placement.md)
- [Root Spine Files](https://banes-lab.com/records/architecture/root-spine-files.md)

## Linked from

- [Taxonomy / Classification / Naming](https://banes-lab.com/ontology/principles/architecture-category-taxonomy-classification-naming.md)