[MSDN Library April 2000] Required Properties for All Messages (100%)

MSDN Library - April 2000 > Platform SDK > Messaging and Collaboration Services > Messaging API (MAPI) > Guide > MAPI Programming Basics > Messages > About Message Properties

[MSDN Library April 2000] Required Report Message Properties (86.8055555555556%)

MSDN Library - April 2000 > Platform SDK > Messaging and Collaboration Services > Messaging API (MAPI) > Guide > MAPI Programming Basics > Messages > About Message Properties

[MSDN Library April 2000] Required Properties (38.1219806763285%)

MSDN Library - April 2000 > Platform SDK > Management Services > Setup > Windows Installer > Properties > About Properties

[MSDN Library April 2000] Required Pen Driver Messages (36.1084470019892%)

MSDN Library - April 2000 > DDK Documentation > Windows 95 DDK > Windows 95 Documentation > Design Guide > Pen Device Driver > Message Processing

[MSDN Library April 2000] Required and Optional Message Properties (35.5%)

MSDN Library - April 2000 > Platform SDK > Messaging and Collaboration Services > Microsoft Exchange Server > Microsoft Exchange Server Programmer's Reference > Reference > Objects > Information Store Objects > Message Object > MAPI Message Properties with Special Behavior

[MSDN Library September 1992] Required Command Messages (31.6664150563607%)

Product Documentation > Multimedia Development Kit > Programmer's Reference > Chapter 4 Message Overview > Media Control Interface Messages

[MSDN Library September 1992] Required Commands for All Devices (29.4057260585394%)

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

[MSDN Library September 1992] Required Commands (27.7717391304348%)

Product Documentation > Multimedia Development Kit > Programmer's Reference > Chapter 7 MCI Command Strings > About MCI Commands

[MSDN Library September 1992] Required Command Messages for All Drivers (23.0546244990847%)

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

[MSDN Library September 1992] Required MIDI Messages for Internal Synthesizers (21.1255873317069%)

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