public synchronized void reset() throws IOException {
        if (markPos != -1) {
            seek(markPos);
        }
    }
Returns the file position to its position at the time of
the immediately previous call to the <code>mark()</code>
method.
plugins/svg-plugin/batik-codec-fix/src/main/java/org/apache/batik/ext/awt/image/codec/util/SeekableStream.java