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FontSizeFontSlant

FontWeight

FilledSmallSquareFontWeight is an option for Cell, StyleBox and StyleForm which specifies how heavy the characters in a font should be.

FilledSmallSquare Typical settings are "Plain" and "Bold".

FilledSmallSquare For some fonts and on some computer systems, additional settings are supported, such as "Thin", "Light", "Medium", "SemiBold", "Heavy", "Black" and "Fat".

FilledSmallSquare See notes for FontFamily.

FilledSmallSquare See The Mathematica Book: Section 2.8.9 and Section 2.10.10.

FontSizeFontSlant