[MSDN Library April 2000] Implementation of Subsystem (100%)

MSDN Library - April 2000 > Windows Resource Kits > Windows NT Workstation 4.0 Resource Kit > Chapter 29 - POSIX Compatibility

[MSDN Library April 2000] Implementation of the OS/2 Subsystem (90.625%)

MSDN Library - April 2000 > Windows Resource Kits > Windows NT Workstation 4.0 Resource Kit > Chapter 28 - OS/2 Compatibility

[MSDN Library April 2000] Implementation of Subsystem (70.3497023809524%)

MSDN Library - April 2000 > Windows Resource Kits > Windows NT 3.51 Resource Kit > Windows NT Resource Kit Volume 1: Resource Guide > POSIX Compatibility

[MSDN Library April 2000] Implementation of the OS/2 Subsystem (61.7559523809524%)

MSDN Library - April 2000 > Windows Resource Kits > Windows NT 3.51 Resource Kit > Windows NT Resource Kit Volume 1: Resource Guide > OS/2 Compatibility

[MSDN Library April 2000] Implementation of the Subsystem (41.6705174625682%)

MSDN Library - April 2000 > Windows Resource Kits > Windows NT Workstation 4.0 Resource Kit > Chapter 27 - Windows Compatibility and Migration > Compatibility with Windows 3.x