[MSDN Library June 1998] Implementation of the OS/2 Subsystem (100%)

MSDN Library Visual Studio 6.0 > Windows Resource Kits > Windows NT Workstation 4.0 Resource Kit > Chapter 28 - OS/2 Compatibility

[MSDN Library June 1998] Implementation of Subsystem (90.625%)

MSDN Library Visual Studio 6.0 > Windows Resource Kits > Windows NT Workstation 4.0 Resource Kit > Chapter 29 - POSIX Compatibility

[MSDN Library June 1998] Implementation of the OS/2 Subsystem (70.0220814132104%)

MSDN Library Visual Studio 6.0 > Windows Resource Kits > Windows NT 3.51 Resource Kit > Windows NT Resource Kit Volume 1: Resource Guide > OS/2 Compatibility

[MSDN Library June 1998] Implementation of the Subsystem (64.1305043522786%)

MSDN Library Visual Studio 6.0 > Windows Resource Kits > Windows NT 3.51 Resource Kit > Windows NT Resource Kit Volume 1: Resource Guide > Windows 3.x Compatibility

[MSDN Library June 1998] Implementation of Subsystem (62.159178187404%)

MSDN Library Visual Studio 6.0 > Windows Resource Kits > Windows NT 3.51 Resource Kit > Windows NT Resource Kit Volume 1: Resource Guide > POSIX Compatibility