\starttypescript [luci]
\definetypeface [luci][mm][math][lucibr][default]
\definetypeface [luci][mm][bfmath][lucibr][default] % removal prints nonbold math only
\stoptypescript
...
% typescripts for text in serif, sans etc. omitted but contain:
\definefontsynonym [LucidaBright][lbr.tfm][encoding=\typescriptthree]
\definefontsynonym [LucidaBright-Demi][lbd.tfm][encoding=\typescriptthree]
...
\starttypescript [math] [lucibr] [name]
\usemathcollection [lucibr]
\definefontsynonym [MathRoman][LucidaBright] ... etc.
\definebodyfont [default] [mm] [mr=MathRoman mo 1, ex=MathExtension mo 1, ... etc.]
.. math font tfm definitions
\stoptypescript
\starttypescript [bfmath] [lucibr] [name]
\usemathcollection [lucibr]
\definefontsynonym [MathRomanBold] [LucidaBright-Demi] ... etc.
\definebodyfont [default] [mm] [mrbf=MathRomanBold mo 1, exbf=MathExtensionBold mo 1, ... etc.]
.. bold font tfm definitions
\stoptypescript
\stoptypescriptcollection