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README.md

 # Cloogle [![][travis badge]][travis]
 
 The [Clean][] language search engine. Cloogle lets you search for functions,
-types, classes and modules from Clean libraries. The web app is available at
-[cloogle.org][]. Cloogle was inspired by [Hoogle][].
+types, classes and modules from Clean libraries. It also has documentation for
+language features, common compiler errors and ABC instructions. The web app is
+available at [cloogle.org][].
+
+Cloogle was inspired by [Hoogle][]. As of June 27, 2018, Cloogle indexes
+100× lines of code less than Hoogle (25 thousand vs. 2.3 million). This
+allows Cloogle to implement more advanced features, such as `using` queries to
+find usages.
 
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