<h3 id="TOP">Index</h3>
<ul><li><a href="#PONG_TUTORIAL">PONG TUTORIAL</a>
-<ul><li><a href="#Part_1_We_start_with_a_Rect">Part 1: We start with a Rect</a></li>
+<ul><li><a href="#CATEGORY">CATEGORY</a></li>
+<li><a href="#Part_1_We_start_with_a_Rect">Part 1: We start with a Rect</a></li>
<li><a href="#Part_0_quot_The_Screen_quot">Part 0: "The Screen"</a>
<ul><li><a href="#Creating_an_empty_event_loop">Creating an (empty) event loop</a></li>
</ul>
<p>Just in case you live under a rock, Pong is one of the earliest arcade games, a true classic by Atari Inc. The game has two simple rectangles scrolling up and down trying to hit a (square) ball that bounces around, and could be thought of as a table tennis simulation.</p>
</div>
+<h2 id="CATEGORY">CATEGORY</h2>
+<div id="CATEGORY_CONTENT">
+<p>Tutorials</p>
+
+</div>
<h2 id="Part_1_We_start_with_a_Rect">Part 1: We start with a Rect</h2>
<div id="Part_1_We_start_with_a_Rect_CONTENT">
<p>In Pong, the player controls a rectangle that moves up and down, so creating the rectangle looks like a good place to start:</p>