> For the complete documentation index, see [llms.txt](https://help.bioinsight.illumina.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.bioinsight.illumina.com/connected-analytics/project-web-ui/p-flow.md).

# Flow

Flow provides tooling for building and running secondary analysis pipelines. The platform supports analysis workflows constructed using Common Workflow Language (CWL) and Nextflow. Each step of an analysis pipeline executes a containerized application using inputs passed into the pipeline or output from previous steps.

You can configure the following components in Flow:

* [Reference Data](/connected-analytics/project-web-ui/p-flow/f-referencedata.md).— Reference Data for Graphical CWL flows.
* [Pipelines](/connected-analytics/project-web-ui/p-flow/pipelines-new-view.md) — One or more tools configured to process input data and generate output files.
* [Analyses](/connected-analytics/project-web-ui/p-flow/f-analyses.md) — Launched instance of a pipeline with selected input data.


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