i bet u've noticed the blank squeares on the selection bars.....thats the red hexes, its usually differant blocking hexes, u got wallblocks to place out were there are holes in the walls......u got blocking hexes that doesnt show on the automap to put out on the edge of the map, u got blockers to put out under scenerys, u got scroll blockers, u'll be amazed by the many types of blockers there are........