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 # Flask
 
 Flask is a lightweight [WSGI] web application framework. It is designed
+
+> **Note on WSGI**: WSGI stands for Web Server Gateway Interface, a Python standard that allows web applications to communicate with web servers.
 to make getting started quick and easy, with the ability to scale up to
 complex applications. It began as a simple wrapper around [Werkzeug]
 and [Jinja], and has become one of the most popular Python web