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@@ -272,7 +272,7 @@ The accuracy of language coding is vital, and Suppliers are instructed to contac
#### Title
The `<title>` element of every `xhtml` content document must match the `dc:title` metadata of the package file.
The `<title>` element of every `xhtml` content document must match the main `<h1>` heading of the content document in question. For front- and rearmatter content, if the document does not have a heading, the `aria-label` value of the main `<section>` element is to be used instead. If bodymatter content does not have headings, use the three first words of the content, followed by a space and en ellipsis character (not three points).
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Maybe it would be better to speak about the main heading of the content document without mentioning h1. According to the current guidelines, the main heading of a content document can also be h2. We may also need an explicit rule for how headings like this should be handled: <h1><span class="chnum">Chapter 1</span><br/>Chapter heading</h1> (see section Headings). At least a word space, possible a period or a comma needs to be added after the chapter number.
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Maybe it would be better to speak about the main heading of the content document without mentioning h1. According to the current guidelines, the main heading of a content document can also be h2. We may also need an explicit rule for how headings like this should be handled:
<h1><span class="chnum">Chapter 1</span><br/>Chapter heading</h1>(see section Headings). At least a word space, possible a period or a comma needs to be added after the chapter number.