The Microsoft Management Console or MMC is an integrated presentation service in Windows 2000/XP/Vista. Application developers use it to interface with their management programs. MMC is part of the Microsoft Platform SDK, which is accessible online for downloads and for general use. Developers can extend the functionality and usability of the management console through installation of snap-ins that automate tasks in management services. MMC has a snap-in manager that connects to the design elements of the user interface and also works with other snap-ins. The snap-ins consists of stand-alone applications and extension snap-ins. The console's snap-ins may extend the namespace and context menu with additional items enumerated in each node. Snap-ins can use MMC to extend or create a toolbar. Meanwhile, snap-ins use MMC nodes to add property pages to property sheets. Lastly, snap-ins can use two MMC commands to deliver HTML help files to users.