diff --git a/src/com/t_oster/liblasercut/Customizable.java b/src/com/t_oster/liblasercut/Customizable.java
new file mode 100644
index 0000000000000000000000000000000000000000..7391c2ede08a90e75167eb7be74b4efe1c6e31c7
--- /dev/null
+++ b/src/com/t_oster/liblasercut/Customizable.java
@@ -0,0 +1,26 @@
+package com.t_oster.liblasercut;
+
+/**
+ *
+ * @author thommy
+ */
+public interface Customizable {
+    public String[] getPropertyKeys();
+    /**
+     * Sets the property with the given key
+     * a property may only be of the classes
+     * Integer, Boolean, Double, Float and String
+     * and never set to null
+     * @param key
+     * @param value 
+     */
+    public void setProperty(String key, Object value);
+    /**
+     * Returns the value of the property or null, if the key
+     * does not name a valid property
+     * A property may never return null!
+     * @param key
+     * @return 
+     */
+    public Object getProperty(String key);
+}