[MSDN Library June 1998] Required Features for Address Book Providers (100%)

MSDN Library Visual Studio 6.0 > Platform SDK > Database and Messaging Services > Messaging API (MAPI) > Guide > Developing an Address Book Provider

[MSDN Library June 1998] Required Features for Address Book Containers (96.6666666666667%)

MSDN Library Visual Studio 6.0 > Platform SDK > Database and Messaging Services > Messaging API (MAPI) > Guide > Developing an Address Book Provider

[MSDN Library June 1998] Required Functionality for Transport Providers (81.9875776397516%)

MSDN Library Visual Studio 6.0 > Platform SDK > Database and Messaging Services > Messaging API (MAPI) > Guide > Developing a Transport Provider

[MSDN Library June 1998] Required and Optional Interfaces for Message Store Providers (79.3452380952381%)

MSDN Library Visual Studio 6.0 > Platform SDK > Database and Messaging Services > Messaging API (MAPI) > Guide > Developing a Message Store Provider

[MSDN Library June 1998] Required Translation DLL Functions (40.3084415584416%)

MSDN Library Visual Studio 6.0 > Platform SDK > Database and Messaging Services > Microsoft Exchange Server > Gateway Programmer's Reference > Guide > Message Translation

[MSDN Library September 1992] Required MIDI Messages for Internal Synthesizers (25.6257624017349%)

Product Documentation > Windows 3.1 DDK > Multimedia Device Adaptation Guide > Chapter 2 Audio Device Drivers > Writing a MIDI Output Driver

[MSDN Library September 1992] Required Command Messages for All Drivers (22.2235649745792%)

Product Documentation > Windows 3.1 DDK > Multimedia Device Adaptation Guide > Chapter 3 MCI Device Drivers > Handling MCI Messages

[MSDN Library September 1992] Required Command Messages, Flags, and Data Structures (20.5833419900166%)

Product Documentation > Windows 3.1 DDK > Multimedia Device Adaptation Guide > Chapter 3 MCI Device Drivers > Handling MCI Messages

[MSDN Library September 1992] Required Commands for All Devices (17.4729437229437%)

Product Documentation > Multimedia Development Kit > Programmer's Reference > Chapter 7 MCI Command Strings > Experimenting with Command Strings

[MSDN Library September 1992] Required Command Set (15.2962315462315%)

Product Documentation > Multimedia Development Kit > Programmer's Reference > Appendix A MCI Command String Syntax Summary