> For the complete documentation index, see [llms.txt](https://help.connected.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.connected.illumina.com/emedgene/emedgene-analyze-manual/variant-visualization/variant-visualization-tool/visualization-tracks.md).

# Visualization tracks

Visualization tracks add reference, curated, knowledge base, population, and optional signal data to the [**Variant visualization tool**](/emedgene/emedgene-analyze-manual/variant-visualization/variant-visualization-tool.md).

Track availability depends on the case type, enabled integrations, and attached files.

Refer to the pages below for track details by category:

* [**Default tracks**](/emedgene/emedgene-analyze-manual/variant-visualization/variant-visualization-tool/visualization-tracks/default-tracks.md): Core reference and case tracks for variant review.
* [**Curated data tracks**](/emedgene/emedgene-analyze-manual/variant-visualization/variant-visualization-tool/visualization-tracks/curated-data-tracks.md): Curated clinical variant data from sources like ClinVar and Curate.
* [**Knowledge base tracks**](/emedgene/emedgene-analyze-manual/variant-visualization/variant-visualization-tool/visualization-tracks/knowledge-base-tracks.md): Gene and region knowledge for disease and dosage context.
* [**Population data tracks**](/emedgene/emedgene-analyze-manual/variant-visualization/variant-visualization-tool/visualization-tracks/population-data-tracks.md): Internal and public population data for frequency comparison.
* [**Additional tracks**](/emedgene/emedgene-analyze-manual/variant-visualization/variant-visualization-tool/visualization-tracks/additional-tracks.md): Optional alignment, signal, and structural tracks when supporting files are available.


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