diff --git a/Calculator.md b/Calculator.md
index c43ec9b..b549810 100644
--- a/Calculator.md
+++ b/Calculator.md
@@ -5,7 +5,7 @@ The Calculator is a control used for performing mathematical calculations.
 
 ![](Calculator_calculator.jpg)
 
-## Features
+### Features
 * Basic Math Functions
 * Memory Operations
 	* Clear
@@ -15,7 +15,7 @@ The Calculator is a control used for performing mathematical calculations.
 	* Subract (M-)
 * Mouse and Keyboard support
 
-## Properties
+### Properties
 | Property | Description |
 | --- | --- |
 | CalculatorButtonPanelTemplate | Gets or sets the ControlTemplate of the Calculator buttons to define the wanted calculator buttons. |
@@ -26,7 +26,7 @@ The Calculator is a control used for performing mathematical calculations.
 | Precision |  Gets or sets the maximum number of digits displayed to the right of the decimal point. |
 | Value | Gets or sets the numeric value. |
 
-## Events
+### Events
 | Event | Description |
 | --- | --- |
 | ValueChanged | Raised when the **Value** changes. |