<?xml version="1.0" encoding="UTF-8"?><toc><section id="sec_foreword"><title>Foreword</title></section><section id="sec_1"><label>1</label><title>Scope</title></section><section id="sec_2"><label>2</label><title>Normative references</title></section><section id="sec_3"><label>3</label><title>Terms and definitions</title></section><section id="sec_4"><label>4</label><title>Marking</title></section><section id="sec_5"><label>5</label><title>Construction and assembly</title></section><section id="sec_6"><label>6</label><title>Tests</title><section id="sec_6.1"><label>6.1</label><title>Applicability</title></section><section id="sec_6.2"><label>6.2</label><title>Operation test</title></section></section><section id="sec_bibl"><title>Bibliography</title></section></toc>