add documentation for new -f option to flac
diff --git a/doc/html/documentation.html b/doc/html/documentation.html
index ba06c23..c8a36e1 100644
--- a/doc/html/documentation.html
+++ b/doc/html/documentation.html
@@ -351,6 +351,14 @@
 		</TR>
 		<TR>
 			<TD NOWRAP ALIGN="RIGHT" VALIGN="TOP" BGCOLOR="#F4F4CC">
+				<TT>-f</TT>, <TT>--force</TT>
+			</TD>
+			<TD>
+				Force overwriting of output files.  By default, <TT><B>flac</B></TT> warns that the output file already exists and continues to the next file.
+			</TD>
+		</TR>
+		<TR>
+			<TD NOWRAP ALIGN="RIGHT" VALIGN="TOP" BGCOLOR="#F4F4CC">
 				<TT>-o filename</TT>,<BR><TT>--output-name=filename</TT>
 			</TD>
 			<TD>