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+# Status of this document
+
+This document is the product of the [Common Workflow Language working
+group](https://groups.google.com/forum/#!forum/common-workflow-language).  The
+latest stable version of this document is available in the "v1.0" directory at
+
+https://github.com/common-workflow-language/common-workflow-language
+
+The products of the CWL working group (including this document) are made available
+under the terms of the Apache License, version 2.0.
+
+<!--ToC-->
+
+# Introduction
+
+The Common Workflow Language (CWL) working group is an informal, multi-vendor
+working group consisting of various organizations and individuals that have an
+interest in portability of data analysis workflows.  The goal is to create
+specifications like this one that enable data scientists to describe analysis
+tools and workflows that are powerful, easy to use, portable, and support
+reproducibility.