[MSDN Library June 1998] MCI_SYSINFO (84.375%)

MSDN Library Visual Studio 6.0 > Platform SDK > Graphics and Multimedia Services > Multimedia Reference > Multimedia Commands

[MSDN Library September 1992] MCI_SYSINFO (35.487012987013%)

Product Documentation > Multimedia Development Kit > Programmer's Reference > Chapter 5 Message Directory > Message Descriptions