tex \def\Link#1.a.b.c.{\expandafter\def\csname tex4ht\endcsname{\expandafter\def\csname tex4ht\endcsname{#1,xhtml,mathml}\input tex4ht.sty }}\def\HCode{\futurelet\HCode\HChar}\def\HChar{\ifx"\HCode\def\HCode"##1"{\Link##1}\expandafter\HCode\else\expandafter\Link\fi}\let\svrm=\rm\def\rm{\svrm\ifx\c\comment\def\rm{\let\rm=\svrm\catcode`\@=12\catcode`\\=0 \csname tex4ht\endcsname\catcode`\@=0\catcode`\\=13 }\expandafter\rm\fi}\HCode %2.a.b.c.\input  %1
        tex \def\Link#1.a.b.c.{\expandafter\def\csname tex4ht\endcsname{\expandafter\def\csname tex4ht\endcsname{#1,xhtml,mathml}\input tex4ht.sty }}\def\HCode{\futurelet\HCode\HChar}\def\HChar{\ifx"\HCode\def\HCode"##1"{\Link##1}\expandafter\HCode\else\expandafter\Link\fi}\let\svrm=\rm\def\rm{\svrm\ifx\c\comment\def\rm{\let\rm=\svrm\catcode`\@=12\catcode`\\=0 \csname tex4ht\endcsname\catcode`\@=0\catcode`\\=13 }\expandafter\rm\fi}\HCode %2.a.b.c.\input  %1
        tex \def\Link#1.a.b.c.{\expandafter\def\csname tex4ht\endcsname{\expandafter\def\csname tex4ht\endcsname{#1,xhtml,mathml}\input tex4ht.sty }}\def\HCode{\futurelet\HCode\HChar}\def\HChar{\ifx"\HCode\def\HCode"##1"{\Link##1}\expandafter\HCode\else\expandafter\Link\fi}\let\svrm=\rm\def\rm{\svrm\ifx\c\comment\def\rm{\let\rm=\svrm\catcode`\@=12\catcode`\\=0 \csname tex4ht\endcsname\catcode`\@=0\catcode`\\=13 }\expandafter\rm\fi}\HCode %2.a.b.c.\input  %1
        tex4ht %1 -ic:\tex4ht\ht-fonts\%3 -ic:\tex4ht\ht-fonts\unicode\!
        t4ht %1 %4
#        texindex ?