Index: trunk/src/org/openstreetmap/josm/gui/mappaint/StyleKeys.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/mappaint/StyleKeys.java	(revision 12380)
+++ trunk/src/org/openstreetmap/josm/gui/mappaint/StyleKeys.java	(revision 12381)
@@ -4,5 +4,5 @@
 /**
  * Interface defining string constants (MapCSS property keys).
- * 
+ *
  * For the implementation of the <code>@supports</code> feature, the list of
  * supported keys is loaded from this interface using reflection.
@@ -11,24 +11,87 @@
 public interface StyleKeys {
 
+    /**
+     * MapCSS color property key
+     */
     String COLOR = "color";
+    /**
+     * MapCSS dashes property key
+     */
     String DASHES = "dashes";
+    /**
+     * MapCSS dashes-background-color property key
+     */
     String DASHES_BACKGROUND_COLOR = "dashes-background-color";
+    /**
+     * MapCSS dashes-background-opacity property key
+     */
     String DASHES_BACKGROUND_OPACITY = "dashes-background-opacity";
+    /**
+     * MapCSS dashes-offset property key
+     */
     String DASHES_OFFSET = "dashes-offset";
+    /**
+     * MapCSS fill-color property key
+     */
     String FILL_COLOR = "fill-color";
+    /**
+     * MapCSS fill-extent property key
+     */
     String FILL_EXTENT = "fill-extent";
+    /**
+     * MapCSS fill-extent-threshold property key
+     */
     String FILL_EXTENT_THRESHOLD = "fill-extent-threshold";
+    /**
+     * MapCSS fill-image property key
+     */
     String FILL_IMAGE = "fill-image";
+    /**
+     * MapCSS fill-opacity property key
+     */
     String FILL_OPACITY = "fill-opacity";
+    /**
+     * MapCSS font-family property key
+     */
     String FONT_FAMILY = "font-family";
+    /**
+     * MapCSS font-size property key
+     */
     String FONT_SIZE = "font-size";
+    /**
+     * MapCSS font-style property key
+     */
     String FONT_STYLE = "font-style";
+    /**
+     * MapCSS font-weight property key
+     */
     String FONT_WEIGHT = "font-weight";
+    /**
+     * MapCSS icon-image property key
+     */
     String ICON_IMAGE = "icon-image";
+    /**
+     * MapCSS icon-height property key
+     */
     String ICON_HEIGHT = "icon-height";
+    /**
+     * MapCSS icon-offset-x property key
+     */
     String ICON_OFFSET_X = "icon-offset-x";
+    /**
+     * MapCSS icon-offset-y property key
+     */
     String ICON_OFFSET_Y = "icon-offset-y";
+    /**
+     * MapCSS icon-opacity property key
+     */
     String ICON_OPACITY = "icon-opacity";
+    /**
+     * MapCSS icon-rotation property key
+     */
     String ICON_ROTATION = "icon-rotation";
+    /**
+     * MapCSS icon-width property key
+     */
     String ICON_WIDTH = "icon-width";
     /**
@@ -36,35 +99,131 @@
      */
     String ICON_POSITION = "icon-position";
+    /**
+     * MapCSS linecap property key
+     */
     String LINECAP = "linecap";
+    /**
+     * MapCSS linejoin property key
+     */
     String LINEJOIN = "linejoin";
+    /**
+     * MapCSS major-z-index property key
+     */
     String MAJOR_Z_INDEX = "major-z-index";
+    /**
+     * MapCSS miterlimit property key
+     */
     String MITERLIMIT = "miterlimit";
+    /**
+     * MapCSS modifier property key
+     */
     String MODIFIER = "modifier";
+    /**
+     * MapCSS object-z-index property key
+     */
     String OBJECT_Z_INDEX = "object-z-index";
+    /**
+     * MapCSS offset property key
+     */
     String OFFSET = "offset";
+    /**
+     * MapCSS opacity property key
+     */
     String OPACITY = "opacity";
+    /**
+     * MapCSS real-width property key
+     */
     String REAL_WIDTH = "real-width";
+    /**
+     * MapCSS repeat-image property key
+     */
     String REPEAT_IMAGE = "repeat-image";
+    /**
+     * MapCSS repeat-image-align property key
+     */
     String REPEAT_IMAGE_ALIGN = "repeat-image-align";
+    /**
+     * MapCSS repeat-image-height property key
+     */
     String REPEAT_IMAGE_HEIGHT = "repeat-image-height";
+    /**
+     * MapCSS repeat-image-offset property key
+     */
     String REPEAT_IMAGE_OFFSET = "repeat-image-offset";
+    /**
+     * MapCSS repeat-image-opacity property key
+     */
     String REPEAT_IMAGE_OPACITY = "repeat-image-opacity";
+    /**
+     * MapCSS repeat-image-phase property key
+     */
     String REPEAT_IMAGE_PHASE = "repeat-image-phase";
+    /**
+     * MapCSS repeat-image-spacing property key
+     */
     String REPEAT_IMAGE_SPACING = "repeat-image-spacing";
+    /**
+     * MapCSS repeat-image-width property key
+     */
     String REPEAT_IMAGE_WIDTH = "repeat-image-width";
+    /**
+     * MapCSS text property key
+     */
     String TEXT = "text";
+    /**
+     * MapCSS text-anchor-horizontal property key
+     */
     String TEXT_ANCHOR_HORIZONTAL = "text-anchor-horizontal";
+    /**
+     * MapCSS text-anchor-vertical property key
+     */
     String TEXT_ANCHOR_VERTICAL = "text-anchor-vertical";
+    /**
+     * MapCSS text-color property key
+     */
     String TEXT_COLOR = "text-color";
+    /**
+     * MapCSS text-halo-color property key
+     */
     String TEXT_HALO_COLOR = "text-halo-color";
+    /**
+     * MapCSS text-halo-opacity property key
+     */
     String TEXT_HALO_OPACITY = "text-halo-opacity";
+    /**
+     * MapCSS text-halo-radius property key
+     */
     String TEXT_HALO_RADIUS = "text-halo-radius";
+    /**
+     * MapCSS text-offset property key
+     */
     String TEXT_OFFSET = "text-offset";
+    /**
+     * MapCSS text-offset-x property key
+     */
     String TEXT_OFFSET_X = "text-offset-x";
+    /**
+     * MapCSS text-offset-y property key
+     */
     String TEXT_OFFSET_Y = "text-offset-y";
+    /**
+     * MapCSS text-opacity property key
+     */
     String TEXT_OPACITY = "text-opacity";
+    /**
+     * MapCSS text-position property key
+     */
     String TEXT_POSITION = "text-position";
+    /**
+     * MapCSS way-direction-arrows property key
+     */
     String WAY_DIRECTION_ARROWS = "way-direction-arrows";
+    /**
+     * MapCSS width property key
+     */
     String WIDTH = "width";
+    /**
+     * MapCSS z-index property key
+     */
     String Z_INDEX = "z-index";
 
Index: trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss/ExpressionFactory.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss/ExpressionFactory.java	(revision 12380)
+++ trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss/ExpressionFactory.java	(revision 12381)
@@ -1222,4 +1222,9 @@
         }
 
+        /**
+         * Compute the minimum / maximum over the list
+         * @param lst The list
+         * @return The minimum or maximum depending on {@link #computeMax}
+         */
         public Float aggregateList(List<?> lst) {
             final List<Float> floats = Utils.transform(lst, (Function<Object, Float>) x -> Cascade.convertTo(x, float.class));
Index: trunk/src/org/openstreetmap/josm/gui/mappaint/styleelement/TextLabel.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/mappaint/styleelement/TextLabel.java	(revision 12380)
+++ trunk/src/org/openstreetmap/josm/gui/mappaint/styleelement/TextLabel.java	(revision 12381)
@@ -232,4 +232,9 @@
     }
 
+    /**
+     * Creates a new text label with a different position strategy
+     * @param labelPositionStrategy The new position strategy to use
+     * @return The new label
+     */
     public TextLabel withPosition(PositionForAreaStrategy labelPositionStrategy) {
         return new TextLabel(this, labelPositionStrategy);