"small"            1
"large"            2
"sea"              4
"somewater"        8
"mountain"        16
"swamp"           32
"waste"           64
"forest"         128
"farm"           256
"nostart"        512
"manysites"     1024
"deep"          2048
"cave"          4096
"firesite"      8192
"airsite"      16384 
"watersite"    32768
"earthsite"    65536
"astralsite"  131072
"deathsite"   262144
"naturesite"  524288
"bloodsite"  1048576
"priestsite" 2097152
"edgemount"  4194304

#define geo_nil 0
#define geo_small 1
#define geo_large (1<<1)
#define geo_sea (1<<2)
#define geo_somewater (1<<3)
#define geo_mountain (1<<4)
#define geo_swamp (1<<5)
#define geo_waste (1<<6)
#define geo_forest (1<<7)
#define geo_farm (1<<8)
#define geo_nostart (1<<9)
#define geo_manysites (1<<10)
#define geo_deep (1<<11)
#define geo_cave (1<<12)
#define geo_firesite (1<<13)
#define geo_airsite (1<<14)
#define geo_watersite (1<<15)
#define geo_earthsite (1<<16)
#define geo_astralsite (1<<17)
#define geo_deathsite (1<<18)
#define geo_naturesite (1<<19)
#define geo_bloodsite (1<<20)
#define geo_priestsite (1<<21)
#define geo_edgemount (1<<22)