Added docs for mailcap
diff --git a/Doc/libwww.tex b/Doc/libwww.tex
index aebe931..aae20b2 100644
--- a/Doc/libwww.tex
+++ b/Doc/libwww.tex
@@ -65,4 +65,7 @@
 --- The External Data Representation Standard as described in RFC 1014,
 written by Sun Microsystems, Inc. June 1987.
 
+\item[mailcap]
+--- Mailcap file handling.  See RFC 1524.
+
 \end{description}