What does WPF stand for?

What does WPF mean?

WPF	Windows Presentation Foundation Computing » Drivers
WPF	Windows Presentation Foundation Computing » Software
WPF	World Population Foundation Community » Non-Profit Organizations
WPF	World Population Foundation Governmental » United Nations
WPF	Wild Poetry Forum Community
WPF	World Peace Foundation Community » Non-Profit Organizations
WPF	World Powerlifting Federation Community » Sports
WPF	When Pigs Fly Internet » Chat
WPF	WordPerfect Form Computing » File Extensions
WPF	World Paintball Federation Community » Sports
WPF	World Physique Federation Miscellaneous » Unclassified
WPF	Westminster Presbyterian Fellowship Community » Religion
WPF	Washington Principals Forum Community » Non-Profit Organizations
WPF	Work Preservation Fund Governmental » US Government
WPF	Work Preservation Fund Governmental » Military
WPF	WorldPort Fax document Computing » File Extensions
WPF	Wedding Planner Forum Community
WPF	Work Process Flow Governmental » NASA
WPF	World POG Federation Community » Sports