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+# topics
+
+Topics are an experiment to see if maybe the workflow defined by git
+branches and hg bookmarks is only partially what users want - perhaps
+something that feels more like a traditional VCS branch is right, but
+that it should "dissolve" upon being finished. This extension exists
+to be a sandbox for that experimentation.
+
+# usage
+
+Enable topics like any mercurial extension: download the source code to a
+local directory, and add that directory to your `.hgrc`:
+
+    [extensions]
+    topics=path/to/hg-topics/src