# Subject Folder

> A facility that separates two sets of one concern under a container, present if and only if the sets must not merge.

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

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Concern Folder](https://banes-lab.com/records/lexicon/concern-folder.md) and before [Governed Root](https://banes-lab.com/records/lexicon/governed-root.md).

## Category

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

## Required by

- [Sideways Overflow](https://banes-lab.com/records/architecture/sideways-overflow.md)
- [Set-Relative Member Name](https://banes-lab.com/records/architecture/set-relative-member-name.md)

## Linked from

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