[MSDN Library April 2000] Optional Implementation (25.7020157200811%)
MSDN Library - April 2000 > Platform SDK > Networking and Directory Services > Active Directory, ADSI, and Directory Services > Active Directory Service Interfaces (ADSI) > Implementing ADSI Providers > Provider Minimum Requirements
[MSDN Library April 2000] Optional Graphics Driver Functions (25.5055147058824%)
MSDN Library - April 2000 > DDK Documentation > Windows NT 4.0 DDK > Graphics Drivers > Design Guide > Part 1: Graphics Drivers > Chapter 3 Supporting the DDI > Graphics Driver Function Support
[MSDN Library April 2000] Optional Display Driver Functions (23.6067667089009%)
MSDN Library - April 2000 > DDK Documentation > Windows NT 4.0 DDK > Graphics Drivers > Design Guide > Part 2: Display and Video Miniport Drivers > Chapter 5 DDI Support in Display Drivers > Display Driver DDI Functions
[MSDN Library April 2000] Optional Tag Values (23.452818627451%)
MSDN Library - April 2000 > DDK Documentation > Windows 95 DDK > Windows 95 Documentation > Design Guide > Printer Driver Overview > Overview of ICC 3.0 Profile Tags Used by Windows 95
[MSDN Library April 2000] Optional Components (23.3479905119943%)
MSDN Library - April 2000 > Windows Resource Kits > BackOffice Resource Kit > Microsoft Exchange Server Resource Guide > Chapter 1: Microsoft Exchange Server Architecture > Server Architecture