Update the list of output formats.
diff --git a/Doc/doc/doc.tex b/Doc/doc/doc.tex
index 3e608a4..8e8979d 100644
--- a/Doc/doc/doc.tex
+++ b/Doc/doc/doc.tex
@@ -131,6 +131,8 @@
\begin{tableii}{p{.75in}|p{3in}}{filenq}{Directory}{Output Formats}
\lineii{html/}{HTML output}
\lineii{info/}{GNU info output}
+ \lineii{isilo/}{\ulink{iSilo}{http://www.isilo.com/}
+ documents (for Palm OS devices)}
\lineii{paper-a4/}{PDF and PostScript, A4 paper}
\lineii{paper-letter/}{PDF and PostScript, US-Letter paper}
\end{tableii}