diff --git a/02-UML/PDF/class.pdf b/02-UML/PDF/class.pdf
index f359d11..e322a7e 100644
Binary files a/02-UML/PDF/class.pdf and b/02-UML/PDF/class.pdf differ
diff --git a/02-UML/class.uxf b/02-UML/class.uxf
index 0041489..85c9627 100644
--- a/02-UML/class.uxf
+++ b/02-UML/class.uxf
@@ -12,6 +12,7 @@
     <panel_attributes>Button
 bg=yellow
 transparency=0
+layer=1
 --
 - id: uint8_t
 - state: STATE
@@ -39,6 +40,7 @@ transparency=0
     <panel_attributes>ClickHandler
 bg=yellow
 transparency=0
+layer=1
 --
 - state: STATE
 - longClick: callBack
@@ -68,6 +70,7 @@ transparency=0
     <panel_attributes>Led
 bg=yellow
 transparency=0
+layer=1
 --
 - id: uint8_t
 --
@@ -101,6 +104,7 @@ m2=-b</panel_attributes>
     <panel_attributes>Blinker
 bg=yellow
 transparency=0
+layer=1
 --
 - state: STATE
 - tON: uint16_t
@@ -140,6 +144,7 @@ transparency=0
     <panel_attributes>Factory
 bg=yellow
 transparency=0
+layer=1
 --
 + init(): void
 + build(): void
@@ -213,6 +218,7 @@ layer=0</panel_attributes>
     <panel_attributes>App
 bg=yellow
 transparency=0
+layer=1
 --
 - state: STATE
 --