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VPSKeys
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<p>VPSKeys is a <a href="/facts/Freeware/c8oGA9ju">freeware</a> <a href="/facts/Input_method/HoB832tg">input method editor</a> developed and distributed by the <a href="/facts/Vietnamese_Professionals_Society/L3K7MJ2c">Vietnamese Professionals Society</a> (VPS). One of the first input method editors for Vietnamese, it allows users to add <a href="/facts/Diacritic/Rw6lMzQW">accent marks</a> to Vietnamese text on computers running <a href="/facts/Microsoft_Windows/bwhAhuSL">Microsoft Windows</a>. The first version of VPSKeys, supporting Windows 3.1, was released in 1993. The most recent version is 4.3, released in October 2007. </p>