The following list describes which versions of Rich Edit are included in which releases Microsoft® Windows®.
Windows XP
Includes Rich Edit 3.0 with a Rich Edit 1.0 emulator.
Windows Me
Includes Rich Edit 1.0 and 3.0.
Windows 2000
Includes Rich Edit 3.0 with a Rich Edit 1.0 emulator.
Windows NT 4.0
Includes Rich Edit 1.0 and 2.0.
Windows 98
Includes Rich Edit 1.0 and 2.0.
Windows 95
Includes only Rich Edit 1.0. However, Riched20.dll is compatible with Windows 95 and may be installed by an application that requires it.
On Windows 95/98/Me, Rich Edit 1.0 is localized so that it works with a particular OS that is similarly localized. For example, on Japanese versions of an OS, Rich Edit 1.0 can display Japanese, but not Arabic.