\begin{center}
  \Large\bfseries
  Test source for \texttt{FAM256} patch
\end{center}


$BK\%=!<%9$O;3K\OB5A;a$K$h$k!V?t<0(Bfam$B$N@)8B$H(Bluatex$B!W!J(Bqa:52744$B!KCf$N%3!<(B
$B%I$r%Y!<%9$K$7$?$b$N$G$"$k!%(B

\bigskip

\paragraph{More than 16 math font families.}
\font\fontA=cmr10
$
\mbfa{A}
\mbfb{B}
\mbfc{C}
\mbfd{D}
\mbfe{E}
\mbff{F}
\mbfg{G}
\mbfh{H}
\mbfi{I}
\mbfj{J}
\mbfk{K}
\mbfl{L\ fam=\the\fam\ }$

$
\mbfaa{Aa}
\mbfab{Ab}
\mbfac{Ac}
\mbfad{Ad}
\mbfae{Ae}
\mbfaf{Af}
\mbfag{Ag}
\mbfah{Ah}
\mbfai{Ai}
\mbfaj{Aj}
\mbfak{Ak}
\mbfal{Al}
\mbfam{Am}
\mbfan{An}
\mbfao{Ao}
\mbfap{Ap\ fam\the\fam\ }
$

$
\mbfba{Aa}
\mbfbb{Ab}
\mbfbc{Ac}
\mbfbd{Ad}
\mbfbe{Ae}
\mbfbf{Af}
\mbfbg{Ag}
\mbfbh{Ah}
\mbfbi{Ai}
\mbfbj{Aj}
\mbfbk{Ak}
\mbfbl{Al}
\mbfbm{Am}
\mbfbn{An}
\mbfbo{Ao}
\mbfbp{Ap\ fam\the\fam\ }
$

$
\mbfca{Aa}
\mbfcb{Ab}
\mbfcc{Ac}
\mbfcd{Ad}
\mbfce{Ae}
\mbfcf{Af}
\mbfcg{Ag}
\mbfch{Ah}
\mbfci{Ai}
\mbfcj{Aj}
\mbfck{Ak}
\mbfcl{Al}
\mbfcm{Am}
\mbfcn{An}
\mbfco{Ao}
\mbfcp{Ap\ fam\the\fam\ }
$

$
\mbfda{Aa\ fam\the\fam\ }
\mbfdb{Ab\ fam\the\fam\ }
\mbfdc{Ac\ fam\the\fam\ }
\mbfdd{Ad\ fam\the\fam\ }
%
\ \textfont255=\fontA \fam255 roman
$

\medskip

\paragraph{\.{omathchar}\ etc.}
\omathcode`<="3460065
\mathcode`>="4065
\xdef\lx{\odelimiter"4450068"030001}
\odelcode`[="410074"03000B
${\tt \verb|\mathchar"7F25|:\ }\mathchar"7F25,\ 
{\tt \verb|\omathchar"7420125|:\ }
\omathchar"7420125$

{\tt meaning of \verb|\langle|:\ \meaning\langle}, 

{\tt meaning of \verb|\lx|:\ \meaning\lx}


${\tt \verb|\lx|:\ }\lx,\
{\tt \verb|\bigl\lx|:\ } \bigl\lx,\
{\tt \verb|\Bigl\lx|:\ } \Bigl\lx$


{\tt \verb+\the\mathcode`\f+:\ \hex{\the\mathcode`\f}}, 
{\tt \verb+\the\omathcode`\f+:\ \hex{\the\omathcode`\f}}$B!J$I$A$i$b(B16$B?J$K(B
$BJQ49$7$?!K(B

$\left[\right.\bigl[\Bigl[\Bigr)\bigr)) <>$

$\radical"270370{}$,\ $\oradical"460070"030074{} $\ 
$\radical"270370{a}$,\ $\oradical"460070"030074{a} $\ 
$\radical"270370{\int_V f\,d\mu}$,\ $\oradical"460070"030074{\int_V f\,d\mu} $

\medskip

\.{odelcode} primitive$B$K$h$k(B\emph{delimiter code$B$N<hF@(B}$B$O$&$^$/F0$+$J$$!'(B\\
{\tt \verb+\the\delcode`\|+:} ${\the\delcode`\|}$, 
{\tt \verb+\the\odelcode`\|+:} ${\the\odelcode`\|}$$B!J$I$A$i$b(B10$B?J!K(B

\medskip

\paragraph{Infinite level ``fi''}
\def\na{\hskip 0pt plus 1fi({\tt fi})\hskip 0pt plus 1fi}
\def\nb{\hskip 0pt plus 1fil({\tt fil})\hskip 0pt plus 1fil}
\def\nc{\hskip 0pt plus 1fill({\tt fill})\hskip 0pt plus 1fill}
\def\nd{\hskip 0pt plus 1filll({\tt filll})\hskip 0pt plus 1filll}
\fbox{\hbox to 14cm{$B"#(B\na $B"#(B\nb $B"#(B\nc $B"#(B\nd $B"#(B}}

\fbox{\hbox to 14cm{$B"#(B\na $B"#(B\nb $B"#(B\nc $B"#(B}}

\fbox{\hbox to 14cm{$B"#(B\na $B"#(B\nb $B"#(B}}

\fbox{\hbox to 14cm{$B"#(B\na $B"#(B\na\na $B"#(B}}



\paragraph{65536 registers}
\leavevmode
{\tracingall
\setbox40000=\hbox to 10mm{fuga!}\copy40000
{\setbox40000=\hbox to 10mm{a}\copy40000
  {\setbox40000=\hbox to 10mm{$B4A;z2>L>(B}\copy40000}
\global\setbox40000=\hbox to 10mm{asdf}}\copy40000
{\setbox40000=\hbox to 10mm{\TeX}\copy40000
  {\setbox40000=\hbox to 10mm{$B$[$2$[$2(B}\copy40000}\copy40000}}

\count34656=465\count45486=124
\advance\count34656 by\count45486
\the\count34656\nonstopmode
