diff --git a/tech/arduino_nano.wiki b/tech/arduino_nano.wiki
index 2407cab..b00cc00 100644
--- a/tech/arduino_nano.wiki
+++ b/tech/arduino_nano.wiki
@@ -77,4 +77,8 @@ Same pattern:
 Interrupts are the same as OS typical interrupts, controlled by the Interrupt
 lookup table. On this device the ILT is instead a control register. 
 
+
+
+=== Clock ===
+
 [[embedded]]