building.length=6
building.width=4
building.icon=stone
building.max=0
building.buildingorientation=3
building.areatoclearlengthbefore=0
building.areatoclearlengthafter=0
building.areatoclearwidthbefore=3
building.areatoclearwidthafter=0
building.iswallsegment=true

initial.startlevel=-5
initial.nativename=Muraille
initial.nopathstobuilding=true
initial.priority=500
initial.tag=wall_level_0

upgrade1.clearTag=wall_level_0
upgrade1.tag=wall_level_1
upgrade1.tag=no_upgrade_till_wall_initialized

upgrade2.clearTag=wall_level_1
upgrade2.tag=wall_level_2
upgrade2.forbiddenTagInVillage=wall_level_0