diff --git a/feature-toggle/etc/feature-toggle.png b/feature-toggle/etc/feature-toggle.png
new file mode 100644
index 000000000..5c118e57e
Binary files /dev/null and b/feature-toggle/etc/feature-toggle.png differ
diff --git a/feature-toggle/etc/feature-toggle.ucls b/feature-toggle/etc/feature-toggle.ucls
new file mode 100644
index 000000000..538d3f416
--- /dev/null
+++ b/feature-toggle/etc/feature-toggle.ucls
@@ -0,0 +1,111 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<class-diagram version="1.1.9" icons="true" automaticImage="PNG" always-add-relationships="true" generalizations="true" 
+  realizations="true" associations="true" dependencies="true" nesting-relationships="true" router="FAN">  
+  <interface id="1" language="java" name="com.iluwatar.featuretoggle.pattern.Service" project="feature-toggle" 
+    file="/feature-toggle/src/main/java/com/iluwatar/featuretoggle/pattern/Service.java" binary="false" 
+    corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="238" y="187"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="true" signature="true" 
+      sort-features="false" accessors="true" visibility="true">      
+      <attributes public="true" package="true" protected="true" private="true" static="true"/>      
+      <operations public="true" package="true" protected="true" private="true" static="true"/>    
+    </display>  
+  </interface>  
+  <class id="2" language="java" 
+    name="com.iluwatar.featuretoggle.pattern.propertiesversion.PropertiesFeatureToggleVersion" project="feature-toggle" 
+    file="/feature-toggle/src/main/java/com/iluwatar/featuretoggle/pattern/propertiesversion/PropertiesFeatureToggleVersion.java" 
+    binary="false" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="241" y="449"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="true" signature="true" 
+      sort-features="false" accessors="true" visibility="true">      
+      <attributes public="true" package="true" protected="true" private="true" static="true"/>      
+      <operations public="true" package="true" protected="true" private="true" static="true"/>    
+    </display>  
+  </class>  
+  <class id="3" language="java" name="com.iluwatar.featuretoggle.pattern.tieredversion.TieredFeatureToggleVersion" 
+    project="feature-toggle" 
+    file="/feature-toggle/src/main/java/com/iluwatar/featuretoggle/pattern/tieredversion/TieredFeatureToggleVersion.java" 
+    binary="false" corner="BOTTOM_RIGHT">    
+    <position height="149" width="230" x="502" y="119"/>    
+    <display autosize="false" stereotype="true" package="true" initial-value="true" signature="true" 
+      sort-features="false" accessors="true" visibility="true">      
+      <attributes public="true" package="true" protected="true" private="true" static="true"/>      
+      <operations public="true" package="true" protected="true" private="true" static="true"/>    
+    </display>  
+  </class>  
+  <class id="4" language="java" name="com.iluwatar.featuretoggle.user.User" project="feature-toggle" 
+    file="/feature-toggle/src/main/java/com/iluwatar/featuretoggle/user/User.java" binary="false" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="616" y="453"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="true" signature="true" 
+      sort-features="false" accessors="true" visibility="true">      
+      <attributes public="true" package="true" protected="true" private="true" static="true"/>      
+      <operations public="true" package="true" protected="true" private="true" static="true"/>    
+    </display>  
+  </class>  
+  <class id="5" language="java" name="com.iluwatar.featuretoggle.user.UserGroup" project="feature-toggle" 
+    file="/feature-toggle/src/main/java/com/iluwatar/featuretoggle/user/UserGroup.java" binary="false" 
+    corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="956" y="187"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="true" signature="true" 
+      sort-features="false" accessors="true" visibility="true">      
+      <attributes public="true" package="true" protected="true" private="true" static="true"/>      
+      <operations public="true" package="true" protected="true" private="true" static="true"/>    
+    </display>  
+  </class>  
+  <dependency id="6">    
+    <end type="SOURCE" refId="1"/>    
+    <end type="TARGET" refId="4"/>  
+  </dependency>  
+  <dependency id="7">    
+    <end type="SOURCE" refId="3"/>    
+    <end type="TARGET" refId="5"/>  
+  </dependency>  
+  <association id="8">    
+    <bendpoint x="911" y="415"/>    
+    <end type="SOURCE" refId="5" navigable="false">      
+      <attribute id="9" name="freeGroup">        
+        <position height="19" width="63" x="846" y="368"/>      
+      </attribute>      
+      <multiplicity id="10" minimum="0" maximum="2147483647">        
+        <position height="17" width="23" x="707" y="418"/>      
+      </multiplicity>    
+    </end>    
+    <end type="TARGET" refId="4" navigable="true"/>    
+    <display labels="true" multiplicity="true"/>  
+  </association>  
+  <realization id="11">    
+    <end type="SOURCE" refId="2"/>    
+    <end type="TARGET" refId="1"/>  
+  </realization>  
+  <dependency id="12">    
+    <end type="SOURCE" refId="2"/>    
+    <end type="TARGET" refId="4"/>  
+  </dependency>  
+  <dependency id="13">    
+    <end type="SOURCE" refId="3"/>    
+    <end type="TARGET" refId="4"/>  
+  </dependency>  
+  <association id="14">    
+    <bendpoint x="953" y="459"/>    
+    <end type="SOURCE" refId="5" navigable="false">      
+      <attribute id="15" name="paidGroup">        
+        <position height="19" width="66" x="963" y="419"/>      
+      </attribute>      
+      <multiplicity id="16" minimum="0" maximum="2147483647">        
+        <position height="17" width="23" x="711" y="463"/>      
+      </multiplicity>    
+    </end>    
+    <end type="TARGET" refId="4" navigable="true"/>    
+    <display labels="true" multiplicity="true"/>  
+  </association>  
+  <realization id="17">    
+    <end type="SOURCE" refId="3"/>    
+    <end type="TARGET" refId="1"/>  
+  </realization>  
+  <classifier-display autosize="true" stereotype="true" package="true" initial-value="true" signature="true" 
+    sort-features="false" accessors="true" visibility="true">    
+    <attributes public="true" package="true" protected="true" private="true" static="true"/>    
+    <operations public="true" package="true" protected="true" private="true" static="true"/>  
+  </classifier-display>  
+  <association-display labels="true" multiplicity="true"/>
+</class-diagram>
\ No newline at end of file