Gets or sets a value that specifies the index of an alternate annotation form.
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
Annotation forms include glyphs placed in open or solid circles, squares, parentheses, diamonds or rounded boxes.
If the value of is greater than zero and the selected font does not support annotation alternates, the default form of the letter is displayed.
This property gets or sets a value on the object that owns a Typography property, which is the only way to access a Typography class instance. In addition, this property supports an attached property usage so that it can be set on text-containing objects in XAML.