The minimal nif would be:
<--B--> <BODY>
This will actually have the same result as if you did not use the --nice option.
This is the nif I used for my www niceSgml2Html pages.
<--BarTags1-->
<TABLE WIDTH="100%" CELLSPACING="0">
<TR>
<TD WIDTH="350" BGCOLOR="#000000" ALIGN="left">
<FONT FACE="Helvetica" COLOR="#ffffff"><B>
The Cactus Site
</B></FONT>
</TD>
<TD WIDTH="150" BGCOLOR="#000000" ALIGN="right">
<--BarTags2-->
</TD>
</TABLE>
<--A-->
<META HTTP-EQUIV="content-type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="keywords" CONTENT="SGML HTML">
<META NAME="description"
CONTENT="Create attractive HTML documents from LINUXDOC.DTD SGML.">
<--B-->
<BODY BGCOLOR="#ffffff" LINK="#aa0000" TEXT="#000000"
BACKGROUND="BackGround.gif" >
<TABLE CELLSPACING="0">
<TR>
<TD VALIGN="top" WIDTH="140">
<!-- Here are the left margin contents -->
<FONT FACE="Helvetica" SIZE="1">
<A HREF="index.html">
<IMG SRC="img/home.gif"
ALIGN="middle" ALT="home" HEIGHT=28 WIDTH=20 BORDER=0>
</A>
Cactus Home Page
<BR><BR>
<A HREF="mailto:vrypan@hol.gr">
<IMG SRC="img/envelope.gif"
ALIGN="middle" ALT="vrypan@hol.gr" HEIGHT=28 WIDTH=28 BORDER=0>
</A>
Send me mail
<BR><BR>
The niceSgml2Html resources :
<UL>
<LI><A HREF="niceSgml2Html.html">Main Page</A>
<LI><A HREF="niceUG.html">User's Guide</A>
<LI><A HREF="src/niceSgml2Html-0.4.tar.gz">Download</A>
<LI><A HREF="Gallery.html">Gallery</A>
<LI><A HREF="Comparing.html">Comparing</A>
</UL>
<BR><BR>
<CENTER>Here is a random number
<IMG SRC="http://users.hol.gr/cgi-bin/count.cgi?ft=2|md=5|dd=C|df=vrypan$fntop" absmiddle>
</CENTER>
</FONT>
</TD> <!-- End of left margin contents -->
<TD VALIGN="top"><FONT FACE="Helvetica" SIZE="2">
<--C-->
</FONT></TD>
</TABLE>