Represents the base class for annotation layer types. Annotations will usually disable some of the default hover/touch behaviors of the chart when they are introduced to the series collection. In return they provide some valuable information as the cursor is moved by hovering over the chart, or performing a press-hold-drag interaction in touch mode.
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