diff --git a/src/micropolisj/build_tool/MakeTiles.java b/src/micropolisj/build_tool/MakeTiles.java
index 7888459..2d361bb 100644
--- a/src/micropolisj/build_tool/MakeTiles.java
+++ b/src/micropolisj/build_tool/MakeTiles.java
@@ -35,10 +35,11 @@ public class MakeTiles
 		Graphics2D gr = buf.createGraphics();
 
 		for (int i = 0; i < NTILES; i++) {
-			String tileImage = recipe.getProperty(Integer.toString(i));
-			assert tileImage != null;
+			String rawSpec = recipe.getProperty(Integer.toString(i));
+			assert rawSpec != null;
 
-			ImageSpec ref = parseImageSpec(tileImage);
+			TileSpec tileSpec = TileSpec.parse(rawSpec);
+			ImageSpec ref = parseImageSpec(tileSpec);
 			drawTo(ref, gr, 0, TILE_SIZE*i);
 		}
 
@@ -81,12 +82,13 @@ public class MakeTiles
 		int height;
 	}
 
-	static ImageSpec parseImageSpec(String chain)
+	static ImageSpec parseImageSpec(TileSpec spec)
 	{
 		ImageSpec result = null;
 
-		for (String layerStr : chain.split("\\s*\\|")) {
+		for (String layerStr : spec.getValues("image")) {
 
+System.err.println("parsing "+layerStr);
 		ImageSpec rv = new ImageSpec();
 		rv.background = result;
 		result = rv;
diff --git a/src/micropolisj/build_tool/TileSpec.java b/src/micropolisj/build_tool/TileSpec.java
new file mode 100644
index 0000000..3353a93
--- /dev/null
+++ b/src/micropolisj/build_tool/TileSpec.java
@@ -0,0 +1,169 @@
+package micropolisj.build_tool;
+
+import java.util.*;
+
+public class TileSpec
+{
+	Map<String, List<String> > multiValues;
+
+	protected TileSpec()
+	{
+		this.multiValues = new HashMap<String, List<String> >();
+	}
+
+	public static TileSpec parse(String inStr)
+	{
+		TileSpec ts = new TileSpec();
+		ts.load(inStr);
+		return ts;
+	}
+
+	public String getValue(String key)
+	{
+		List<String> v = multiValues.get(key);
+		if (v != null && v.size() >= 1) {
+			return v.get(0);
+		}
+		else {
+			return null;
+		}
+	}
+
+	public String [] getValues(String key)
+	{
+		List<String> v = multiValues.get(key);
+		if (v != null) {
+			return v.toArray(new String[0]);
+		}
+		else {
+			return new String[0];
+		}
+	}
+
+	protected void load(String inStr)
+	{
+		Scanner in = new Scanner(inStr);
+		String k;
+		while ( (k=in.nextKey()) != null ) {
+			String v = in.nextValue();
+			if (v == null) {
+				if (k.startsWith("no")) {
+					k = k.substring(2);
+					v = "0";
+				}
+				else {
+					v = "1";
+				}
+			}
+
+			if (multiValues.containsKey(k)) {
+				multiValues.get(k).add(v);
+			}
+			else {
+				ArrayList<String> a = new ArrayList<String>();
+				a.add(v);
+				multiValues.put(k, a);
+			}
+		}
+	}
+
+	static class Scanner
+	{
+		String str;
+		int off = 0;
+		int st = ST_VALUE;
+
+		static int ST_KEY = 0;
+		static int ST_VALUE = 1;
+		static int ST_COMPAT = 2;
+		static int ST_EOF = 3;
+
+		Scanner(String str)
+		{
+			this.str = str;
+			if (str.indexOf('(') == -1) {
+				st = ST_COMPAT;
+			}
+		}
+
+		private void skipWhitespace()
+		{
+			while (off < str.length() && (Character.isWhitespace(str.charAt(off)) || str.charAt(off) == ',')) {
+				off++;
+			}
+		}
+
+		public String nextKey()
+		{
+			if (st == ST_EOF || off >= str.length()) {
+				return null;
+			}
+
+			if (st == ST_COMPAT) {
+				st = ST_VALUE;
+				return "image";
+			}
+
+			assert st == ST_KEY;
+
+			if (str.charAt(off) == '|') {
+				st = ST_VALUE;
+				off++;
+				skipWhitespace();
+				return "image";
+			}
+			else {
+				int start = off;
+				while (off < str.length() && (str.charAt(off) == '-' || Character.isLetterOrDigit(str.charAt(off)))) {
+					off++;
+				}
+				st = ST_VALUE;
+				return str.substring(start, off);
+			}
+		}
+
+		public String nextValue()
+		{
+			assert st == ST_VALUE;
+
+			if (off == str.length()) {
+				st = ST_EOF;
+				return null;
+			}
+
+			int c = str.charAt(off);
+			if (Character.isWhitespace(c) || c == ',') {
+				skipWhitespace();
+				st = ST_KEY;
+				return null;
+			}
+
+			int endQuote = 0;
+			if (c == '(') {
+				off++;
+				endQuote = ')';
+			}
+
+			int start = off;
+			while (off < str.length()) {
+				c = str.charAt(off);
+				if (c == endQuote) {
+					int end = off;
+					off++;
+					skipWhitespace();
+					st = ST_KEY;
+					return str.substring(start,end);
+				}
+				else if (endQuote == 0 && (Character.isWhitespace(c) || c == '|')) {
+					int end = off;
+					skipWhitespace();
+					st = ST_KEY;
+					return str.substring(start, end);
+				}
+				off++;
+			}
+			st = ST_EOF;
+			return str.substring(start);
+		}
+	}
+}