From: Oliver Bock on
Enhanced metafiles are just a serialisation of Win32 GDI commands. That
is, you can record a bunch of lines, circles, etc. I think Microsoft
does not emphasise them much because they won't do a good job with GDI+
rendering and probably won't work at all with WPF. Thus it is a legacy
format, one which was largely used by Microsoft for OLE2, which is
itself in decline and being deemphasised, because nobody could ever get
it to work well.