XBIT

Every tile on the map has a 1 byte (FF) XBIT value for it, setting various flags about the tile.

Flag Information for Each Bit Position

Bit Position	Decimal	Flag Meaning
0	+1	Salt Water (Will water on this tile be fresh or salt water)
1	+2	Rotate the tile by 90 degrees
2	+4	Surface Water (Is this tile covered in water)
3	+8	XVAL mask (does this get counted in landVal Calc)
4	+16	Watered (Is this tile receiving water).
5	+32	Piped (Can this tile receive water).
6	+64	Powered (Is this tile receiving power).
7	+128	Powerable (Can this tile receive or need power).