Index: applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/OsmTileSource.java
===================================================================
--- applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/OsmTileSource.java	(revision 29845)
+++ applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/OsmTileSource.java	(revision 29882)
@@ -1,9 +1,22 @@
 package org.openstreetmap.gui.jmapviewer.tilesources;
 
+/**
+ * OSM Tile source.
+ */
 public class OsmTileSource {
 
+    /**
+     * The default "Mapnik" OSM tile source URL
+     */
     public static final String MAP_MAPNIK = "http://tile.openstreetmap.org";
 
+    /**
+     * The default "Mapnik" OSM tile source.
+     */
     public static class Mapnik extends AbstractOsmTileSource {
+        
+        /**
+         * Constructs a new {@code "Mapnik"} tile source.
+         */
         public Mapnik() {
             super("Mapnik", MAP_MAPNIK);
@@ -15,4 +28,7 @@
     }
 
+    /**
+     * The "Cycle Map" OSM tile source.
+     */
     public static class CycleMap extends AbstractOsmTileSource {
 
@@ -23,4 +39,7 @@
         private int SERVER_NUM = 0;
 
+        /**
+         * Constructs a new {@code CycleMap} tile source.
+         */
         public CycleMap() {
             super("OSM Cycle Map", PATTERN);
@@ -36,5 +55,5 @@
         @Override
         public int getMaxZoom() {
-            return 17;
+            return 19;
         }