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Terra is a cloud-native platform for biomedical researchers to access data, run analysis tools, and collaborate.
Terra powers important scientific projects like FireCloud, AnVIL, and BioData Catalyst. Learn more.

WDL Documentation

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Documentation for the Workflow Description Language. For a gentle introduction on how to write WDL workflows, check out Getting Started with WDL.

  • Getting Started with WDL plus-icon minus-icon

    The Workflow Description Language (WDL, usually pronounced as 'widdle') is a community-driven, human-readable language for data processing workflows. Whether you want to use WDL in Terra or develop your own WDL workflows, we have the resources to ...
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  • Base Structure plus-icon minus-icon

    This documentation is in the process of being updated. In the meantime, you may find that some GATK commands are out of date, or that the WDL information is incomplete. If you encounter any issues you can't solve, please let us know. There are 5 ...
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  • Add Variables plus-icon minus-icon

    This documentation is in the process of being updated. In the meantime, you may find that some GATK commands are out of date, or that the WDL information is incomplete. If you encounter any issues you can't solve, please let us know. In this cont...
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  • Add Plumbing plus-icon minus-icon

    This documentation is in the process of being updated. In the meantime, you may find that some GATK commands are out of date, or that the WDL information is incomplete. If you encounter any issues you can't solve, please let us know. By plumbing,...
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  • Validate Syntax plus-icon minus-icon

    This documentation is in the process of being updated. In the meantime, you may find that some GATK commands are out of date, or that the WDL information is incomplete. If you encounter any issues you can't solve, please let us know. Nobody likes...
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  • Specify Inputs plus-icon minus-icon

      This documentation is in the process of being updated. In the meantime, you may find that some GATK commands are out of date, or that the WDL information is incomplete. If you encounter any issues you can't solve, please let us know. The simple...
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  • Execute! plus-icon minus-icon

    This documentation is in the process of being updated. In the meantime, you may find that some GATK commands are out of date, or that the WDL information is incomplete. If you encounter any issues you can't solve, please let us know. At the momen...
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  • Toolkit: All the tools you need to write and run WDLs plus-icon minus-icon

    This documentation is in the process of being updated. In the meantime, you may find that some GATK commands are out of date, or that the WDL information is incomplete. If you encounter any issues you can't solve, please let us know. AUTHORING ...
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