-print header(), start_html($title), h1($title), start_table();
+my $css=<<EOJ;
+span.hole:before { content: " "; }
+td.ref { font-size: 0.75em; }
+tr.o { background: #ddddff; }
+EOJ
+
+print header(),
+ start_html(-title=>$title, -style=>{'-code'=>$css}),
+ h1($title), start_table();