Shared plain latex Math

<..picmath plain,latex ..>+

\Configure{pmatrix}
   {\ifvmode
       \def\end:pmatrix{\IgnorePar\HCode{</div>}\end:TTT}%
       \:xhtml{\IgnorePar\EndP}\HCode
         {<table\Hnewline class="pmatrix"><tr><td><div
                               class="pmatrix"\Hnewline>}%
    \else \HCode{<span class="pmatrix">}%
       \def \end:pmatrix{\HCode{</span>}}%
    \fi}
   {\end:pmatrix}
\Css{div.pmatrix {text-align:center;}}
\Css{table.pmatrix {width:100\%;}}

-_-_-

<..configure html4-math plain ..>+

<.picmath plain,latex .>
<.picmath plain,fontmath .>
<.picmath plain .>
<.pic plain/latex math 4.0t .>
<.32,4 picmath plain .>
<.pic plain math 4.0t .>
<.html4-math plain,fontmath .>

-_-_-

<..32,4 picmath plain ..>

\Configure{sqrt}
{\Picture+{ \a:@Picture{sqrt}}}
{\EndPicture}
<.32,4 picmath: plain, fontmath, amsmath, amstex1 .>

-_-_-

5.4 Shared plain latex Math