# Annotate a pipeline

Control / log

A variant of [Log and annotate a run](https://meridian.online/operations/log-and-annotate-a-run).

Attach comments, notes, descriptions or groupings to the steps of a pipeline without affecting what it computes.

Page: <https://meridian.online/operations/log-and-annotate-a-run/annotate-a-pipeline>

## Status

Not built yet.

arcform does not do this yet; it would live in how a Protocol runs. [Its place on the roadmap](https://meridian.online/roadmap#log-and-annotate-a-run)

## What other tools call it

Meridian's classification; an independent blind rating agreed on 95.7% of 324 rows (variant, version 3).

- Alteryx Designer: [`Comment`](https://help.alteryx.com/current/en/designer/tools/documentation/comment-tool.html) (read 2026-09-27)
- Alteryx Designer: [`Explorer Box`](https://help.alteryx.com/current/en/designer/tools/documentation/explorer-box-tool.html) (read 2026-09-27)
- Alteryx Designer: [`Tool Container`](https://help.alteryx.com/current/en/designer/tools/documentation/tool-container-tool.html) (read 2026-09-27)
- EasyMorph: [`Generate documentation`](https://help.easymorph.com/doku.php?id=transformations:generatedocumentation) (read 2026-09-27)
- EasyMorph: [`To-do`](https://help.easymorph.com/doku.php?id=transformations:todo) (read 2026-09-27)
- Apache NiFi: [`Label`](https://nifi.apache.org/nifi-docs/user-guide.html) (read 2026-09-27)
- RapidMiner Studio: [`Annotate`](https://docs.rapidminer.com/latest/studio/operators/utility/annotations/annotate.html) (read 2026-09-27)
- RapidMiner Studio: [`Annotations to Data`](https://docs.rapidminer.com/latest/studio/operators/utility/annotations/annotations_to_data.html) (read 2026-09-27)
- RapidMiner Studio: [`Data to Annotations`](https://docs.rapidminer.com/latest/studio/operators/utility/annotations/data_to_annotations.html) (read 2026-09-27)
- Tableau Prep: [`Descriptions`](https://help.tableau.com/current/prep/en-us/prep_build_flow.htm) (read 2026-09-27)
- Tableau Prep: [`Group steps`](https://help.tableau.com/current/prep/en-us/prep_build_flow.htm) (read 2026-09-27)
- Trifacta: [`Comment`](https://help.alteryx.com/aac/en/trifacta-classic/reference/transformation-reference.html) (read 2026-09-27)
- Trifacta: [`Comment Transform`](https://help.alteryx.com/aac/en/trifacta-classic/wrangle-language/language-appendices/transforms.html) (read 2026-09-27)