tile blank id 0 solid 0 file blank.bmp end tile land id 1 solid 1 file land.bmp end tile slopeup id 2 solid 2 lowness 15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0 file slopeup.bmp end tile slopedown id 3 solid 2 lowness 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 file slopedown.bmp end tile full id 4 solid 1 file full.bmp end tile sky id 5 solid 0 file sky.bmp end