pt src="book_assets/rglwidgetClass-1.2.1/init.src.js"></script>
<script src="book_assets/rglwidgetClass-1.2.1/pieces.src.js"></script>
<script src="book_assets/rglwidgetClass-1.2.1/draw.src.js"></script>
<script src="book_assets/rglwidgetClass-1.2.1/controls.src.js"></script>
<script src="book_assets/rglwidgetClass-1.2.1/selection.src.js"></script>
<script src="book_assets/rglwidgetClass-1.2.1/rglTimer.src.js"></script>
<script src="book_assets/rglwidgetClass-1.2.1/pretty.src.js"></script>
<script src="book