[MSDN Library April 2000] METAHEADER (52.6315789473684%)
MSDN Library - April 2000 > Platform SDK > Graphics and Multimedia Services > Windows GDI > Metafiles > Metafile Reference > Metafile Structures
[MSDN Library June 1998] METAHEADER (48.4022556390977%)
MSDN Library Visual Studio 6.0 > Platform SDK > Graphics and Multimedia Services > GDI > Metafiles > Metafile Reference > Enhanced Metafile Structures