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/* $Id$ */
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/* Rail selection types (directions):
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/ \ / \ / \ / \ / \ / \
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/ /\ /\ \ /===\ / \ /| \ / |\
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\/ / \ \/ \ / \===/ \| / \ |/
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\ / \ / \ / \ / \ / \ /
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0 1 2 3 4 5
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*/
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* / \ / \ / \ / \ / \ / \
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* / /\ /\ \ /===\ / \ /| \ / |\
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* \/ / \ \/ \ / \===/ \| / \ |/
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* \ / \ / \ / \ / \ / \ /
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* 0 1 2 3 4 5
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*/
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// mark invalid tiles red
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#define RED(c) c | PALETTE_SEL_TILE_RED
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