[MSDN Library June 1998] MCI_MSF_SECOND (39.8694068144499%)

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

[MSDN Library April 2000] MCI_MSF_SECOND (36.6733840871772%)

MSDN Library - April 2000 > Platform SDK > Graphics and Multimedia Services > Windows Multimedia > Multimedia Reference > Multimedia Macros