add --export-picture-to option to metaflac
diff --git a/man/metaflac.sgml b/man/metaflac.sgml
index 480ede7..2fbca4b 100644
--- a/man/metaflac.sgml
+++ b/man/metaflac.sgml
@@ -343,6 +343,14 @@
</listitem>
</varlistentry>
<varlistentry>
+ <term><option>--export-picture-to=file</option></term>
+ <listitem>
+ <para>
+ Export PICTURE block to a file. Use '-' for stdout. Only one FLAC file may be specified on the command line. The first PICTURE block will be exported unless --export-picture-to is preceded by a --block-number=# option to specify the exact metadata block to extract. Note that the block number is the one shown by --list.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
<term><option>--add-replay-gain</option></term>
<listitem>
<para>