GITHUB . COM {}

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🚀🌠 Tremendous Traffic: 10M - 20M visitors per month


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Prices on github.com are in US Dollars ($). They range from $4.00/month to $21.00/month.
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The estimated annual recurring revenues (ARR) are $251,490,385.

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Keywords {🔍}

nav, content, elements, epubtype, mattgarrish, model, restrictions, navigation, doc, attribute, reading, sign, issue, element, document, defined, additional, projects, epub, semantic, mentioned, commented, system, pull, requests, actions, security, closed, docs, specification, documents, include, addition, toc, pagelist, landmarks, preceding, sections, machinereadable, humanreadable, heading, supposed, requirements, drop, requirement, systems, dont, spec, wcepubcheck, rdeltour,

Topics {✒️}

org/epub/31/spec/epub-packages epub navigation document epub navigation documents content model defined content model restrictions spec issue semantically-enriched nav projects milestone standardized nav elements ignore nav elements type projects additional nav elements human-readable heading comment metadata assignees navigation document nav element carries content doc mattgarrish mentioned nav doc reading system support reading system requirements machine-readable semantic reading system processing content model content document mattgarrish edits additional content nav elements nav element omit epub machine-processing doc reading systems requirements prevent required support rs processing type attribute specification restricts page-list preceding sections add prose navigational purposes specification imposes email · edited assigned labels milestone relationships type element labels type nav child headings

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Questions {❓}

• Already have an account?
• Since machine-processing of non-standardized nav elements seems unlikely, can we drop the "should" requirement from other navs and instead shift it so that reading systems should ignore nav elements that don't have an epub:type element or carry a semantic they don't recognize?

Schema {🗺️}

DiscussionForumPosting:
      context:https://schema.org
      headline:Nav doc: when is epub:type necessary
      articleBody:Section 5.4.1 currently reads: > When a nav element carries the epub:type attribute [Content Docs 3.1] in an EPUB Navigation Document, this specification restricts the content model of the element and its descendants as follows: http://www.idpf.org/epub/31/spec/epub-packages.html#sec-package-nav-def-model But then in 5.4.2.5 it says: > EPUB Navigation Documents MAY include one or more nav elements in addition to the toc, page-list and landmarks nav elements defined in the preceding sections. These additional nav elements SHOULD have an epub:type attribute to provide a machine-readable semantic, and MUST have a human-readable heading as their first child. http://www.idpf.org/epub/31/spec/epub-packages.html#sec-package-nav-def-types-other The problem is that if you omit epub:type to avoid the content model restrictions, you're supposed to get a warning. For most people, that will mean the content model restrictions cannot be avoided. The navigation document is also supposed to be a content document that allows any kind of additional content within it, but these requirements prevent that from truly happening. Since machine-processing of non-standardized nav elements seems unlikely, can we drop the "should" requirement from other navs and instead shift it so that reading systems should ignore nav elements that don't have an epub:type element or carry a semantic they don't recognize? (Somewhat overlapping here with #975.)
      author:
         url:https://github.com/mattgarrish
         type:Person
         name:mattgarrish
      datePublished:2017-06-06T00:54:03.000Z
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      url:https://github.com/976/epub-specs/issues/976
      context:https://schema.org
      headline:Nav doc: when is epub:type necessary
      articleBody:Section 5.4.1 currently reads: > When a nav element carries the epub:type attribute [Content Docs 3.1] in an EPUB Navigation Document, this specification restricts the content model of the element and its descendants as follows: http://www.idpf.org/epub/31/spec/epub-packages.html#sec-package-nav-def-model But then in 5.4.2.5 it says: > EPUB Navigation Documents MAY include one or more nav elements in addition to the toc, page-list and landmarks nav elements defined in the preceding sections. These additional nav elements SHOULD have an epub:type attribute to provide a machine-readable semantic, and MUST have a human-readable heading as their first child. http://www.idpf.org/epub/31/spec/epub-packages.html#sec-package-nav-def-types-other The problem is that if you omit epub:type to avoid the content model restrictions, you're supposed to get a warning. For most people, that will mean the content model restrictions cannot be avoided. The navigation document is also supposed to be a content document that allows any kind of additional content within it, but these requirements prevent that from truly happening. Since machine-processing of non-standardized nav elements seems unlikely, can we drop the "should" requirement from other navs and instead shift it so that reading systems should ignore nav elements that don't have an epub:type element or carry a semantic they don't recognize? (Somewhat overlapping here with #975.)
      author:
         url:https://github.com/mattgarrish
         type:Person
         name:mattgarrish
      datePublished:2017-06-06T00:54:03.000Z
      interactionStatistic:
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         interactionType:https://schema.org/CommentAction
         userInteractionCount:3
      url:https://github.com/976/epub-specs/issues/976
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      url:https://github.com/mattgarrish
      name:mattgarrish
      url:https://github.com/mattgarrish
      name:mattgarrish
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      interactionType:https://schema.org/CommentAction
      userInteractionCount:3
      interactionType:https://schema.org/CommentAction
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