Gets or sets the distance between characters of text in the control measured in 1000ths of the font size.
Assembly: System.Windows (in System.Windows.dll)
As an example, if the font size is 20 pixels and you set the property to 500, 10 pixels will be added between each character of your text. (20 * 500/1000 = 10)
The property is inherited down the visual tree. Inherited values will take priority over default values and set values will take priority over inherited values.