diff --git a/content/roadmaps/107-nodejs/content/104-nodejs-async-programming/104-callbacks.md b/content/roadmaps/107-nodejs/content/104-nodejs-async-programming/104-callbacks.md
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--- a/content/roadmaps/107-nodejs/content/104-nodejs-async-programming/104-callbacks.md
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-# Callbacks
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+# Callbacks
+
+Node.js, being an asynchronous platform, doesn't wait around for things like file I/O to finish - Node.js uses callbacks. A callback is a function called at the completion of a given task; this prevents any blocking, and allows other code to be run in the meantime.
+
+Free Content
+What are callbacks?
+Asynchronicity in Programming Languages