<?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 id="sec_3.1"><label>3.1</label><title>Metadata</title></section><section id="sec_3.2"><label>3.2</label><title>Stakeholders</title></section><section id="sec_3.3"><label>3.3</label><title>Resources identified</title></section><section id="sec_3.4"><label>3.4</label><title>Identifiers and locators</title></section></section><section id="sec_4"><label>4</label><title>Construction of ISSN and cluster ISSN</title></section><section id="sec_5"><label>5</label><title>Assignment of ISSN — Principles</title></section><section id="sec_6"><label>6</label><title>Establishment of the key title and the abbreviated key title</title></section><section id="sec_7"><label>7</label><title>Continuing resource clusters identified with cluster ISSN</title></section><section id="sec_8"><label>8</label><title>Display of ISSN17 and cluster ISSN</title></section><section id="sec_9"><label>9</label><title>ISSN Machine legibility</title></section><section id="sec_10"><label>10</label><title>ISSN Metadata</title></section><section id="sec_11"><label>11</label><title>Administration of the ISSN network</title></section><section id="sec_A"><label>Annex A</label><title>Check digit for ISSN (normative)</title></section><section id="sec_B"><label>Annex B</label><title>Linking ISSN (ISSN-L) (normative)</title></section><section id="sec_C"><label>Annex C</label><title>ISSN Metadata profile (normative)</title><section id="sec_C.1"><label>C.1</label><title>Metadata required from an applicant for ISSN assignment</title></section><section id="sec_C.2"><label>C.2</label><title>Metadata available in the ISSN Register</title></section></section><section id="sec_D"><label>Annex D</label><title>Administration of the ISSN network (normative)</title><section id="sec_D.1"><label>D.1</label><title>General</title></section><section id="sec_D.2"><label>D.2</label><title>Responsibilities of ISO 3297 Registration Authority</title></section><section id="sec_D.3"><label>D.3</label><title>ISO 3297 Registration Agencies</title></section></section><section id="sec_E"><label>Annex E</label><title>Interoperability of ISSN (informative)</title><section id="sec_E.1"><label>E.1</label><title>General</title></section><section id="sec_E.2"><label>E.2</label><title>ISSN in linked data formats</title><section id="sec_E.2.1"><label>E.2.1</label><title>Overview</title></section><section id="sec_E.2.2"><label>E.2.2</label><title>Syntax</title></section></section><section id="sec_E.3"><label>E.3</label><title>ISSN and Digital Object Identifier (DOI)</title><section id="sec_E.3.1"><label>E.3.1</label><title>Overview</title></section><section id="sec_E.3.2"><label>E.3.2</label><title>Syntax and examples</title></section></section><section id="sec_E.4"><label>E.4</label><title>ISSN and OpenURL</title><section id="sec_E.4.1"><label>E.4.1</label><title>Overview</title><section id="sec_E.4.1.1"><label>E.4.1.1</label><title>Syntax and examples</title></section><section id="sec_E.4.1.2"><label>E.4.1.2</label><title>Usage scenario</title></section></section></section><section id="sec_E.5"><label>E.5</label><title>ISSN and URN</title><section id="sec_E.5.1"><label>E.5.1</label><title>Overview</title></section><section id="sec_E.5.2"><label>E.5.2</label><title>Syntax and example</title></section><section id="sec_E.5.3"><label>E.5.3</label><title>Usage scenario</title></section></section><section id="sec_E.6"><label>E.6</label><title>ISSN and GTIN</title><section id="sec_E.6.1"><label>E.6.1</label><title>Overview</title></section><section id="sec_E.6.2"><label>E.6.2</label><title>Syntax and example</title></section></section></section><section id="sec_bibl"><title>Bibliography</title></section></toc>