<?xml version="1.0" encoding="UTF-8"?><toc><section id="sec_foreword"><title>Foreword</title></section><section id="sec_intro"><title>Introduction</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>Ergonomic principles for the design and evaluation of environments</title><section id="sec_4.1"><label>4.1</label><title>General considerations</title></section><section id="sec_4.2"><label>4.2</label><title>Basic principles</title><section id="sec_4.2.1"><label>4.2.1</label><title>Introduction to the basic principles</title></section><section id="sec_4.2.2"><label>4.2.2</label><title>Fit for the intended user population</title></section><section id="sec_4.2.3"><label>4.2.3</label><title>Versatility ‑ flexibility</title></section><section id="sec_4.2.4"><label>4.2.4</label><title>Freedom from interference between task and environment</title></section><section id="sec_4.2.5"><label>4.2.5</label><title>Postural change</title></section><section id="sec_4.2.6"><label>4.2.6</label><title>Maintainability</title></section><section id="sec_4.2.7"><label>4.2.7</label><title>Adaptability</title></section></section><section id="sec_4.3"><label>4.3</label><title>Accessibility</title></section><section id="sec_4.4"><label>4.4</label><title>User information</title></section></section><section id="sec_5"><label>5</label><title>Conformance</title></section><section id="sec_bibl"><title>Bibliography</title></section></toc>