How can I add localization comments to an XAML file ?

The following example shows how to add localization comments to an XAML file.

[XAML]

<TextBlock x:Id = 'text01'
FontFamily = 'Microsoft Sans Serif'
FontSize = '12'
Localization.Attributes = '$Content (Unmodifiable Readable Text)
FontFamily (Unmodifiable Readable)'
Localization.Comments = '$Content (Trademark)
FontSize (Trademark font size)' >
Microsoft
</TextBlock>