diff --git a/README.md b/README.md
index 7e09a87..2695e33 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,7 @@
-# wdiff-markdown-editor
-A versioned editing platform for markdown with wdiff support.
+# dubdiff
+
+A diff viewer for markdown-formatted documents. 
+
+Uses the `wdiff` tool as a diffing engine. This produces an output that is more useful for copy-editing tasks. This wdiff comparison is then processed in a way that is aware of markdown formatting. The resulting output attempts to show differences of copy within the final document format (rather than differences of format).
+
+The markdown-sensitive processing of the wdiff comparison is at `server/components/wdiff/index.js`, for the curious.