diff --git a/single-apps/insourcing/insourcing-mandelbrot-zoom/src/main/java/org/woehlke/computer/kurzweil/application/ComputerKurzweilProperties.java b/single-apps/insourcing/insourcing-mandelbrot-zoom/src/main/java/org/woehlke/computer/kurzweil/application/ComputerKurzweilProperties.java
index 4a76dda1..45726230 100644
--- a/single-apps/insourcing/insourcing-mandelbrot-zoom/src/main/java/org/woehlke/computer/kurzweil/application/ComputerKurzweilProperties.java
+++ b/single-apps/insourcing/insourcing-mandelbrot-zoom/src/main/java/org/woehlke/computer/kurzweil/application/ComputerKurzweilProperties.java
@@ -94,6 +94,32 @@ public static class Control {
         }
     }
 
+    ////@Validated
+    @ToString
+    public static class MandelbrotZoom {
+
+        @Valid @Getter @Setter public View view = new View();
+        @Valid @Getter @Setter public Control control = new Control();
+
+        ////@Validated
+        @ToString
+        public static class View {
+            @NotBlank @Getter @Setter private String title;
+            @NotBlank @Getter @Setter private String subtitle;
+            @NotBlank @Getter @Setter private String buttonsZoom;
+            @NotBlank @Getter @Setter private String buttonsZoomOut;
+            @NotBlank @Getter @Setter private String buttonsSwitch;
+            @NotBlank @Getter @Setter private String buttonsZoomLabel;
+            @NotBlank @Getter @Setter private String buttonsLabel;
+        }
+
+        ////@Validated
+        @ToString
+        public static class Control {
+            @NotNull  @Getter @Setter private Integer threadSleepTime;
+        }
+    }
+
     ////@Validated
     @ToString
     public static class SimulatedEvolution {