Index: resources/help/en/options
===================================================================
--- resources/help/en/options	(revision 1569)
+++ resources/help/en/options	(working copy)
@@ -370,6 +370,11 @@
 --tdbfile
 	Write a .tdb file.
 
+--show-profiles=1
+	Sets a flag in tdb file which marks set mapset as having contour 
+	lines and allows showing profile in MapSource. Default is 0 
+	which means disabled. 
+
 --draw-priority=25
 	When two maps cover the same area, this option controls what
 	order they are drawn in and therefore which map is on top of
Index: src/uk/me/parabola/mkgmap/combiners/TdbBuilder.java
===================================================================
--- src/uk/me/parabola/mkgmap/combiners/TdbBuilder.java	(revision 1569)
+++ src/uk/me/parabola/mkgmap/combiners/TdbBuilder.java	(working copy)
@@ -84,10 +84,17 @@
 		} else {
 			tdbVersion = TdbFile.TDB_V407;
 		}
+		// enable "show profile" button for routes in mapsource 
+		byte enableProfile = 0;
+		if (tdbVersion == TdbFile.TDB_V407)
+		{
+			// this is supported only in version 403 and above 
+			enableProfile = (byte)args.get("show-profiles", 0);
+		}
 
 		tdb = new TdbFile(tdbVersion);
 		tdb.setProductInfo(familyId, productId, productVersion, seriesName,
-				familyName, areaName);
+				familyName, areaName, enableProfile);
 	}
 
 	/**
Index: src/uk/me/parabola/tdbfmt/HeaderBlock.java
===================================================================
--- src/uk/me/parabola/tdbfmt/HeaderBlock.java	(revision 1569)
+++ src/uk/me/parabola/tdbfmt/HeaderBlock.java	(working copy)
@@ -49,6 +49,8 @@
 	 */
 	private String familyName;
 
+	private byte enableProfile;
+
 	HeaderBlock(int tdbVersion) {
 		this.tdbVersion = tdbVersion;
 	}
@@ -92,8 +94,12 @@
 			os.write3(0);
 			os.write4(1252);
 			os.write4(10000);
-			os.write(1);
-			os.write2(0);
+			os.write(1);	// map is routable
+			if (enableProfile == 1)
+				os.write(1);	// map has profile information
+			else
+				os.write(0);
+			os.write(0);	// map has DEM sub files
 		}
 	}
 
@@ -154,4 +160,8 @@
 	public int getTdbVersion() {
 		return tdbVersion;
 	}
+
+	public void setEnableProfile(byte enableProfile) {
+		this.enableProfile = enableProfile;		
+	}
 }
Index: src/uk/me/parabola/tdbfmt/TdbFile.java
===================================================================
--- src/uk/me/parabola/tdbfmt/TdbFile.java	(revision 1569)
+++ src/uk/me/parabola/tdbfmt/TdbFile.java	(working copy)
@@ -92,7 +92,8 @@
 	}
 
 	public void setProductInfo(int familyId, int productId,
-			short productVersion, String seriesName, String familyName, String overviewDescription)
+			short productVersion, String seriesName, String familyName, String overviewDescription,
+			byte enableProfile)
 	{
 		headerBlock = new HeaderBlock(tdbVersion);
 		headerBlock.setFamilyId((short) familyId);
@@ -100,6 +101,7 @@
 		headerBlock.setProductVersion(productVersion);
 		headerBlock.setSeriesName(seriesName);
 		headerBlock.setFamilyName(familyName);
+		headerBlock.setEnableProfile(enableProfile);
 		this.overviewDescription = overviewDescription;
 	}