diff --git a/README.textile b/README.textile
index aa17569..a9c0c69 100644
--- a/README.textile
+++ b/README.textile
@@ -2,4 +2,6 @@ h1. Hacker News Hotkeys
 
 Install the extension: "hacker news hotkeys extension":https://chrome.google.com/extensions/detail/nkeegljkkibjiiaehmjfncdbkbbgdojb
 
-This extension uses jQuery to add hotkeys to "news.ycombinator.com":http://news.ycombinator.com/
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+This extension uses jQuery to add hotkeys to "news.ycombinator.com":http://news.ycombinator.com/
+
+Most of the action goes on in hnkeys.js, the "content script." The extension uses background.html to open new tabs.
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