Multiple Master definition text, tool, software
(Or "Multiple Master Font") A font
that is a mixture of two or more other fonts.
A Multiple Master font is a single font containing from two to sixteen master designs (the current implementation limit). A weight factor specifies the contribution of each master design for the creation of a multiple master font instance
A Multiple Master instance is a single interpolation
of a multiple master font as created by a user or application.
ATM Glossary (http://adobe.com/supportservice/devrelations/typeforum/glossary.html).
Useable fonts (http://susi.informatik.rwth-aachen.de/Mirror/winsite/win3/fonts_atm.html).