#define BUILDING LETTER IMAGE
[terrain_graphics]
	[tile]
		x=0
		y=0
		type={LETTER}
		{IMAGE}
	[/tile]
	set_flag=building-{LETTER}
	no_flag=building-{LETTER}
[/terrain_graphics]
#enddef

#define BUILDING_FLAG LETTER IMAGE FLAG
[terrain_graphics]
	[tile]
		x=0
		y=0
		type={LETTER}
		has_flag={FLAG}
		{IMAGE}
	[/tile]
	set_flag=building-{LETTER}
	no_flag=building-{LETTER}
[/terrain_graphics]
#enddef

#define BUILDING_PROBABILITY LETTER IMAGE PROBABILITY
[terrain_graphics]
	[tile]
		x=0
		y=0
		type={LETTER}
		probability={PROBABILITY}
		{IMAGE}
	[/tile]
	set_flag=building-{LETTER}
	no_flag=building-{LETTER}
[/terrain_graphics]
#enddef