diff -r 67cde01e8359 -r fe6f35cc987b macros.h
--- a/macros.h	Wed Aug 11 21:48:27 2004 +0000
+++ b/macros.h	Wed Aug 11 22:07:08 2004 +0000
@@ -130,7 +130,14 @@
 #define SPRITE_PALETTE(x) ((x) + 0x8000)
 
 extern const byte _ffb_64[128];
+/* Returns the position of the first bit that is not zero, counted from the
+ * left. Ie, 10110100 returns 2, 00000001 returns 0, etc. When x == 0 returns
+ * 0.
+ */
 #define FIND_FIRST_BIT(x) _ffb_64[(x)]
+/* Returns x with the first bit that is not zero, counted from the left, set
+ * to zero. So, 10110100 returns 10110000, 00000001 returns 00000000, etc.
+ */
 #define KILL_FIRST_BIT(x) _ffb_64[(x)+64]
 
 static INLINE int FindFirstBit2x64(int value)
@@ -212,4 +219,6 @@
 	((byte*)b)[1] = (byte)(x >> 8);
 }
 
+#define MAX_DETOUR 6
+
 #endif /* MACROS_H */