%&Plain
\input fontinst.sty

% %1 \ifareglyphs
% 
% \setrawglyph{f}{xfont}{10pt}{102}{375}{750}{375}{50}
% \setrawglyph{g}{xfont}{10pt}{102}{375}{750}{375}{50}
% \setrawglyph{h}{xfont}{10pt}{102}{375}{750}{375}{50}
% 
% \ifareglyphs{}\then True \else False \fi
% \ifareglyphs{a}\then True \else False \fi
% \ifareglyphs{f}\then True \else False \fi
% \ifareglyphs{f,a}\then True \else False \fi
% \ifareglyphs{a,f}\then True \else False \fi
% \ifareglyphs{f,g}\then True \else False \fi
% \ifareglyphs{f,g,a}\then True \else False \fi

%2 \setfontdimen
\generalpltomtx{ecrm1000}{ecrm1000}{pl}{t1draft}
\generalpltomtx{ecss1000}{ecss1000}{pl}{t1draft}
\transformfont{ecdh-shrunk}{%
   \yscalefont{500}{\fromplgivenetx{ecdh1000}{t1draft}}%
}

\bye