<WALL>
    < 50,  50>
    <550,  50>
    <550, 550>
    < 50, 550>
    < 50,  50>
</WALL>

<WALL>
    <100, 500>
    <100, 100>
    <500, 100>
    <500, 300>
    <350, 300>
    <350, 500>
</WALL>

<WALL>
    <300, 550>
    <300, 250>
    <400, 250>
</WALL>

<WALL>
    <300, 100>
    <300, 150>
</WALL>

<WALL>
    <300, 200>
    <300, 250>
    <200, 250>
    <200, 350>
</WALL>

<WALL>
    <150, 350>
    <150, 250>
    <100, 250>
</WALL>

<FACTORY>
    <94.9, 300, 180>
</FACTORY>

<CHECKPOINT>
    < 50,  50, 100, 100,  225>
    <550,  50, 500, 100,  675>
    <550, 300, 500, 300,  900>
    <350, 550, 350, 500, 1185>
    <300, 250, 350, 300, 1460>
    <400, 250, 500, 250, 1585>
    <300, 150, 300, 200, 1731>
    <150, 250, 200, 250, 1877>
    <150, 350, 200, 350, 1977>
    <100, 500, 100, 550, 2167>
    < 50, 300, 100, 300, 2442>
</CHECKPOINT>