# Metric Tag

> A formal definition of the tag for a file that defines and records a measured quantity over time, filed in a metrics folder.

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

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Cancellation Tag](https://banes-lab.com/records/lexicon/cancellation-tag.md) and before [Counter Tag](https://banes-lab.com/records/lexicon/counter-tag.md).

## Category

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