A previously created Font instance which determines the font attributes for the text run. Null can be specified, in which case the text run inherits the font attributes as defined at the document level.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2