--- a/flys-artifacts/src/main/java/de/intevation/flys/exports/XYChartGenerator.java	Thu Nov 10 10:13:57 2011 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/exports/XYChartGenerator.java	Thu Nov 10 10:18:31 2011 +0000
@@ -647,7 +647,14 @@
 
 
     /**
-     * Store themed annotations like MainValues for later plotting.
+     * Register annotations like MainValues for later plotting
+     *
+     * @param o     list of annotations (data of facet).
+     * @param facet The facet. This facet does NOT support any data objects. Use
+     * FLYSArtifact.getNativeFacet() instead to retrieve a Facet which supports
+     * data.
+     * @param theme   Theme document for given annotations.
+     * @param visible The visibility of the annotations.
      */
     protected void doAnnotations(
         FLYSAnnotation annotations,
@@ -657,6 +664,7 @@
     ){
         logger.debug("doAnnotations");
 
+        // Add all annotations to our annotation pool.
         annotations.setTheme(theme);
         annotations.setLabel(facet.getDescription());
         addAnnotations(annotations, visible);