This label distinguish metrics defined and captured by different libraries from each other, ensuring that metrics defined by different development groups will fall under separate namespaces and not require category names to be globally unique across third party libraries linked by an application. Pick your own label which will uniquely identify your library or namespace.
Requirements
Target Platforms: 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