ClearContent method clears the content of the paragraph. It removes all but the last run node and clears the content of the last run node. This is done for the purposes of retaining any character settings that the run may be using so any new content inserted into the paragraph picks up that setting.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, 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