** Windows NT and successors have various subsystems to run legacy applications.

** With the introduction of Windows 7 ( Business, Ultimate, or Enterprise editions ), Windows XP Mode enables full compatibility with older programs supported under Windows XP via Microsoft Virtual PC.

** Win32 console, the terminal emulator of Microsoft Windows

** Windows XP Home Edition N, as above, but without a default installation of Windows Media Player, as mandated by a European Union ruling

** Windows XP Professional N, as above, but without a default installation of Windows Media Player, as mandated by a European Union ruling

** Windows XP Media Center Edition 2003

** Windows XP Media Center Edition 2004

** Windows XP Media Center Edition 2005, released on 12 October 2004.

** Windows XP Tablet PC Edition 2005

** Windows XP 64-bit Edition 2003, based on the Windows NT 5. 2 codebase.

** The Windows 9x kernel, used in Windows 95, 98 and ME

** The Windows NT kernel, used in all Windows NT systems including Windows 2000, XP, Vista and 7

** Windows 2000 Server or Professional with Service Pack 3 or later.

** Windows Server 2003

** Windows Vista

** Windows 7

** Windows Messenger is a scaled-down client that was included with Windows XP in 2001

** Immediately upon the release of Windows XP, Windows Messenger was upgraded to version 4. 5.

** Announcement of the availability of Windows XP Beta 2, which includes the first public beta of Internet Explorer 6.

** Bill Gates keynote ; demonstrated " Athens " PC concept, discussed 64-bit computing, uptake of Windows XP.

** Discussion of Longhorn release timeline and upcoming service packs for Windows XP and Windows Server 2003

** Hawker 850 XP

** Microsoft Windows XP Media Center

** Dimension Pro ( 2005 )-software synthesizer for OS X and Windows XP.

** Windows XP introduced taskbar grouping, which can group the taskbar buttons of several windows from the same application into a single button.

** Starting with Windows XP, the user can choose to always show or hide some icons, or hide them if inactive for some time.

** Windows 95, 98, ME ; Windows 2000 and XP MS-DOS shell syntax

** HP XP

** Disabling The Messenger Service in Windows XP

** Dave Ritchie from Dapto NSW, in a green 1965 Ford Falcon XP coupe.

** Office of Professional Responsibility

** Certifications: Chartered Financial Analyst ( CFA ), Certified Treasury Professional ( CTP ), Certified Valuation Analyst ( CVA ), Certified International Investment Analyst ( CIIA ), Financial Risk Manager ( FRM ), Association of Corporate Treasurers ( ACT ), Certified Market Analyst ( CMA / FAD ) Dual Designation, Corporate Finance Qualification ( CF ), Chartered Alternative Investment Analyst ( CAIA )

** The Law for the Restoration of the Professional Civil Service is passed in Germany.

** Professional Development Courses for Educators

** nForce Professional MCPs ( Media and Communication Processor )

** Professional – replaced C / C ++ 7. 0.

** Professional

** Professional Photography

** Professional Theatre

** Professional Truck Driver Institute ( USA )

** D. Prof – Doctor of Professional Studies

** PE, Professional Engineer

** P. Eng, Professional Engineer

** Chartered IT Professional ( CITP )

** P. Phy, Professional Physicist ( Canada )

** RPP, Registered Professional Planner

** Professional Graphics Adapter

** Professional Graphics Array

** American Football League ( 1938 )-minor professional American football league that changed its name to the American Professional Football Association in 1939

** American Football League ( 1944 )-offshoot of the Pacific Coast Professional Football League, played one year before merging back with the PCPFL

** Part 1: A Linux Newspaper — Professional layout in Linux with Scribus

** Part 2: Desktop publishing in Linux — Professional typography and layout with Scribus