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I should like to have the Brill font substitute for the Greek alphabet (upper and lower cases) as well for the numerals in Tex Gyre Termes Math. So far, I have been able to get the Brill numerals (oldstyle) but nothing more: the Greek letters in math mode are from Termes Math. Here is what I have: \definefontfamily[mainface][serif][Brill] [protrusion=quality, expansion=quality, mode=node, force=yes, ] \definefallbackfamily[mainface][mm][Brill][range={0030-0039, 0391-03A9, 03B1-03C9}, scale=1] \definefallbackfamily [mainface] [mm] [Brill] [preset=math:lowercasegreeknormal] \definefallbackfamily [mainface] [mm] [BrillItalic] [preset=math:lowercasegreekitalic] \definefallbackfamily [mainface] [mm] [Brill] [preset=math:uppercasegreeknormal] \definefallbackfamily [mainface] [mm] [BrillItalic] [preset=math:uppercasegreekitalic] \definefontfamily[mainface][mm][TeX Gyre Termes Math][scale=0.94] \setupmathematics[autopunctuation={all}, ucgreek=normal, lcgreek=italic] \setupbodyfont[mainface,10pt] \starttext A~B~C~a~b~c \emph{A~B~C~a~b~c}\quad math: \m{A~B~C~a~b~c} 0123456789\quad math: \m{0123456789} δ \emph{δ}\quad math: \m{δ} π \emph{π}\quad math: \m{π} Π \emph{ Π}\quad math: \m{Π} \stoptext Any suggestions or pointers will be most welcome. Alan