<..if not amsppt.sty..>
\expandafter\ifx \csname amsppt.sty\endcsname\relax
-_-_-
<..recall amsppt.sty..>
<.if not amsppt.sty.> \else
\ifx \plainend\:UnDef \else
\let\sv:end=\end \let\end=\plainend
\fi
\let\sv:logo=\logo@ \let\logo@=\empty
\fi
-_-_-
<..amsppt.4ht..>
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% amsppt.4ht 2014-07-12-22:36 %
% Copyright (C) 1997--2009 Eitan M. Gurari %
<.TeX4ht copyright.>
\HRestore\footnote
\append:def\EndPreamble{\let\logo@=\sv:logo \let\sv:logo=\empty}
<.set amsppt.sty.>
<.top matter of amsppt.sty.>
<.everypar in amsppt.sty.>
<.hfonts for amsppt.sty.>
<.sectioning in amsppt.sty.>
<.footnotes in amsppt.sty.>
<.bib in amsppt.sty.>
<.roster in amsppt.sty.>
<.captions in amsppt.sty.>
<.enddocument in amsppt.sty.>
<.config amsppt + vanilla shared.>
\Hinput{amsppt}
\endinput
-_-_-
In older files the ams-logo is printer at the first page, possibly before \endmatters. This can be a problem if the \EndPreamble stuff is pushed to the second page.
<..set amsppt.sty..>
\append:def\block{\ifx \EndPicture\:UnDef \:block
\pend:def\endblock{\end:block} \fi}
\NewConfigure{block}{2}
-_-_-