This document is a work in progress to extend the existing crosswalk for accessibility metadata for Schema.org, EPUB, and ONIX to MARC21 and UNIMARC, including a new initial definition column.
Note: Definitions are taken from the Schema.org Accessibility Properties for Discoverability Vocabulary unless otherwise noted (i.e. some are marked as being ONIX definitions).
Furthermore: UNIMARC 231i (pdf file) offers a easy mapping to ONIX 196. Some references may be best described by other UNIMARC codes.
Schema definitions are found here: https://www.w3.org/2021/a11y-discov-vocab/latest/
“ConformsTo” term used in EPUB –drawn from Dublin Core.
Fixed length fields (fixed fields) and variable length fields (very brief summary – fuller details)
MARC 21 fixed field = 3 digit numeric code (except the Leader); no indicators, value in each position has a specific meaning.
MARC 21 variable length field = 3 digit numeric code; each field can have 2 indicators that signify different values; each field can have one or more subfields; convention to designate subfield = $ ; if no subfield, assume $a.
More detailed information about MARC 21 field 341 and MARC21 field 532
The following table provides a crosswalk between the properties defined in the EPUB Accessibility specification [[EPUB-A11Y-11]] and the equivalents defined metadata standards [[ONIX]], MARC21, UNIMARC.
The conformsTo term used in EPUB is drawn from Dublin
Core.
| Definition | EPUB | ONIX | EPUB to MARC21 | ONIX to MARC21 using EPUB Vocabulary | ONIX to MARC21 using ONIX Codes* | UNIMARC |
|---|---|---|---|---|---|---|
| Identifies a party responsible for the testing and certification of the accessibility of an EPUB publication. | certifiedBy |
List 196; Code 90: Compliance certification
by
ProductFormFeatureDescription carries the name of the organization responsible for compliance testing and certification of the product. See code 93 for the URL of the organization, which should also be provided. Only for use in ONIX 3.0 or later
|
532 8# $a[Name of Certifier] | 532 8# Accessibility Note$a | *Awaiting clarification on recording ONIX codes in MARC21 | 231 ##$i93$2onix196 |
| Identifies a credential or badge that establishes the authority of the party identified in the associated certifiedBy property to certify content accessible. | certifierCredential | List 196; Code 93: Compliance certification
by
ProductFormFeatureDescription carries the URL of a web page belonging to the
organisation responsible for compliance testing and certification of the product – typically a
‘home page’ or a page describing the certification scheme itself. For use in ONIX 3.0 or later
|
Do Not Record | - | - | - |
| If the evaluator provides a publicly-readable report of its assessment, provide a link to the assessment in an a11y:certifierReport property associated with [epub-3] the evaluator's name. | certifierReport |
List 196; Code 94: When certification done by an official and independent organization. Or List 196; Code 95: When certification is done by a trusted third party, such as the EPUB creator or distributor. Or List 196; Code 96: When the publisher has self-certified the product. |
856 42 $3Certifier report$u[URL to Certifier report] | 532 8# Accessibility Note$a | - | 231 ##$i94$2onix196 and/or 231 ##$i96$2onix196 |
| An established standard to which the described resource conforms. |
|
List 196; Code 04: EPUB Accessibility Specification 1.1 List 196; Code 80: WCAG v2.0 List 196; Code 85: WCAG level AA |
**Concatenate headings from each ONIX code separated by two dashes. 532 8# $aEpub Accessibility Specification 1.1--WCAG v2.0--WCAG level AA |
- | - | - |
| An established standard to which the described resource conforms. |
|
List 196; Code 04: EPUB Accessibility Specification 1.1 List 196; Code 80: WCAG v2.0 List 196; Code 86: WCAG level AAA |
**Concatenate headings from each ONIX code separated by two dashes. 532 8# $aEpub Accessibility Specification 1.1--WCAG v2.0--WCAG level AAA. |
- | - | - |
| An established standard to which the described resource conforms. |
|
List 196; Code 04: EPUB Accessibility Specification 1.1 List 196; Code 81: WCAG v2.1 List 196; Code 84: WCAG level A |
**Concatenate headings from each ONIX code separated by two dashes. 532 8# $aEpub Accessibility Specification 1.1--WCAG v2.1--WCAG level A. |
- | - | - |
| An established standard to which the described resource conforms. |
|
List 196; Code 04: EPUB Accessibility Specification 1.1 List 196; Code 81: WCAG v2.1 List 196; Code 85: WCAG level AA |
**Concatenate headings from each ONIX code separated by two dashes. 532 8# $aEpub Accessibility Specification 1.1--WCAG v2.1--WCAG level AA. |
- | - | - |
| An established standard to which the described resource conforms. |
|
List 196; Code 04: EPUB Accessibility Specification 1.1 List 196; Code 81: WCAG v2.1 List 196; Code 86: WCAG level AAA |
**Concatenate headings from each ONIX code separated by two dashes. 532 8# $aEpub Accessibility Specification 1.1--WCAG v2.1--WCAG level AAA. |
- | - | - |
| An established standard to which the described resource conforms. |
|
List 196; Code 04: EPUB Accessibility Specification 1.1 List 196; Code 82: WCAG v2.2 List 196; Code 84: WCAG level A |
**Concatenate headings from each ONIX code separated by two dashes. 532 8# $aEpub Accessibility Specification 1.1--WCAG v2.2--WCAG level A. |
- | - | - |
| An established standard to which the described resource conforms. |
|
List 196; Code 04: EPUB Accessibility Specification 1.1 List 196; Code 82: WCAG v2.2 List 196; Code 85: WCAG level AA |
**Concatenate headings from each ONIX code separated by two dashes. 532 8# $aEpub Accessibility Specification 1.1--WCAG v2.2--WCAG level AA. |
- | - | - |
| An established standard to which the described resource conforms. |
|
List 196; Code 04: EPUB Accessibility Specification 1.1 List 196; Code 82: WCAG v2.2 List 196; Code 86: WCAG level AAA |
**Concatenate headings from each ONIX code separated by two dashes. 532 8# $aEpub Accessibility Specification 1.1--WCAG v2.2--WCAG level AAA. |
- | - | - |
| An established standard to which the described resource conforms. |
dcterms:conformsTo
with the URL
http://www.idpf.org/epub/a11y/accessibility-20170105.html#wcag-a
|
List 196; Code 02: EPUB Accessibility Specification 1.0 A | 532 8# $aConforms with the requirements of EPUB Accessibility Spec 1.0 and WCAG level A. | 532 8# Accessibility Note$a | - | 231 ##$i02$2onix196 |
| An established standard to which the described resource conforms. |
dcterms:conformsTo
with the URL
http://www.idpf.org/epub/a11y/accessibility-20170105.html#wcag-aa
|
List 196; Code 03: EPUB Accessibility Specification 1.0 AA | 532 8# $aConforms with the requirements of EPUB Accessibility Spec 1.0 and WCAG level AA. | 532 8# Accessibility Note$a | - | 231 ##$i03$2onix196 |
| An established standard to which the described resource conforms. |
dcterms:conformsTo
with the URL
http://www.idpf.org/epub/a11y/accessibility-20170105.html#wcag-aaa
|
List 196; Code 03: EPUB Accessibility Specification 1.0 along with List 196; Code 86: WCAG level AAA |
532 8# $aConforms with the requirements of EPUB Accessibility Spec 1.0 and WCAG level AAA. | 532 8# Accessibility Note$a | - | 231 ##$i03$2onix196 |
| Identifies the accessibility exemption the EPUB publication falls under. |
|
List 196; Code 75: EAA exception 1 - Micro-enterprises |
532 8# $aDigital product falls under European Accessibility Act exception for Micro-enterprises (as defined by current regulations). The product may not have to comply with requirements of the EAA if the publisher is a micro-enterprise. | - | - | - |
| Identifies the accessibility exemption the EPUB publication falls under. |
|
List 196; Code 76: EAA exception 2 - Disproportionate burden |
532 8# $aDigital product falls under European Accessibility Act exception for Disproportionate burden (as defined by current regulations). The product may not have to comply with requirements of the EAA if doing so would financially overburden the publisher. | - | - | - |
| Identifies the accessibility exemption the EPUB publication falls under. |
|
List 196; Code 77: EAA exception 3 - Fundamental alteration |
532 8# $aDigital product falls under European Accessibility Act exception for Fundamental alteration (as defined by current regulations). The product may not have to comply with requirements of the EAA if doing so requires a fundamental modification of the nature of the product or service. | - | - | - |
The following table provides a crosswalk between the Schema.org metadata and [[ONIX]], MARC21, UNIMARC.
ONIX: List 196 (specific codes follow)
MARC21: would not map. Mapping of individual properties is possible as reflected in the following table
UNIMARC: Easy mapping thru list 231 allowing reference to any ONIX list and code.
| Definition | Schema.org | ONIX | Schema.org in MARC21 | ONIX to Schema in MARC21 | ONIX in MARC21 using ONIX Codes* | UNIMARC |
|---|---|---|---|---|---|---|
| Alternative text is provided for visual content (e.g., via the [HTML] alt attribute). | alternativeText | List 196; Code 14: Short alternative descriptions | 341 0# $avisual$balternativeText$2sapdv or 341 0# $aaudio$bcaptions$2sapdv | - | *Awaiting clarification on recording ONIX codes in MARC21 | 231 ##$i14$2onix196 |
| The work includes annotations from the author, instructor and/or others. | annotations | – | 341 0# $atextual$bannotations $2 sapdv or 532 8# $a This resource includes annotations from the author, instructor and/or others. | - | - | - |
|
Resource includes ARIA roles to organize and improve the structure and navigation. The use of this value corresponds to the inclusion of Document Structure, Landmark, Live Region, and Window roles [[WAI-ARIA]]. |
List 196; Code 30: ARIA roles provided |
- | - | - | - | |
| Audio descriptions are available (e.g., via an [HTML] track element with its kind attribute set to "descriptions"). | audioDescription |
List 175; Code V215: Audio description of video |
341 0# $avisual$daudioDescription$2sapdv | - | - | - |
| (deprecated). The work includes bookmarks to facilitate navigation to key points. Note: The use of the bookmarks value is now deprecated due to its ambiguity. For PDF bookmarks, the tableOfContents value should be used instead. For bookmarks in ebooks, the annotations value can be used. | bookmarks | - | 341 0# $atextual$bbookmarks$2sapdv | - | - | - |
| [1] The content is in braille format, or [2] alternatives are available in braille. Note: Information about the type of braille (e.g., ASCII, unicode, nemeth), whether the braille is contracted or not, and what code the braille conforms to should be provided in the accessibility summary. | braille | List 21; Code BRL: Braille edition or List 175; Code E146: BRF(Braille-ready file) Electronic Braille file |
|
- | - | - |
| (deprecated, replaced by closedCaptions, openCaptions) | captions | – | 341 0# $aauditory$bcaptions$2sapdv or 341 0# $avisual$bcaptions$2sapdv | |||
| Identifies that chemical information is encoded using the ChemML markup language. | ChemML |
List 196; Code 18: Accessible chemistry content (as ChemML) along with List 81; Code 47: Chemical content |
341 0# $avisual$bChemML$2sapdv | - | - | 231 ##$i18$2onix196 |
| Indicates that synchronized captions are available for audio and video content. | closedCaptions |
List 175; Code V210: Closed captions along with List 175; Code V214: Textual description of audio |
341 0# $aauditory$bcaptions$2sapdv or 341 0# $avisual$bcaptions$2sapdv | - | - | - |
| Textual descriptions of math equations are included, in the alt attribute for image-based equations. No longer recommended using alttext within MathML. | describedMath |
List 196; Code 53: Described math content along with List 81; Code 48: Mathematical content |
341 0# $avisual$bdescribedMath$2sapdv | - | - | - |
| Display properties are controllable by the user. This property can be set, for example, if custom CSS style sheets can be applied to the content to control the appearance. It can also be used to indicate that styling in document formats like Word and PDF can be modified. | displayTransformability | List 196; Code 36: All textual content can be modified. | 341 0# $atextual$b displayTransformability$2sapdv | - | - | 231 ## $iE200$2onix175 |
| Indicates that ruby annotations [[JLreq]] are attached to every CJK ideographic character in the content. Ruby annotations are used as pronunciation guides for the logographic characters for languages like Chinese or Japanese. They make difficult CJK ideographic characters more accessible. | - | - | - | - | - | |
| Audio content with speech in the foreground meets the contrast thresholds set out in WCAG Success Criteria 1.4.7. | highContrastAudio | List 196; Code 27: Use of high contrast between foreground and background audio |
3410$aauditory$dhighContrastAudio$2sapdv | - | - | - |
| Content meets the visual contrast threshold set out in WCAG Success Criteria 1.4.6. | highContrastDisplay |
List 196; Code 37: Use of ultra-high contrast between text foreground and background |
3410#$atextual$b highContrastDisplay$2sapdv or 3410#$avisual$c highContrastDisplay$2sapd | - | - | - |
| ONIX: Body text is presented with a contrast ratio of at least 4.5:1 (or 3:1 for large/heading text). Meets Contrast Minimum (text and images of text) WCAG Success Criteria 1.4.3. | - | List 196; Code 26: Use of high contrast between text and background color |
- | - | - | - |
| Indicates that the content can be laid out horizontally (e.g., using the horizontal-tb writing mode of [[css-writing-modes-3]]). This value should only be set when the language of the content allows both horizontal and vertical directions. Notable examples of such languages are Chinese, Japanese, and Korean. | - | - | - | - | - | |
| The work includes an index to the content. | index | List 196; Code 12: Index navigation | 3410#$atextual$bindex$2sapdv | - | - | 231 $i12$2onix196 |
| The content has been formatted to meet large print guidelines. The property is not set if the font size can be increased. See displayTransformability. | largePrint | List 21; Code LTE: Large type / large print edition and List 21; Code ULP: Ultra large print edition |
|
- | - | - |
| Identifies that mathematical equations and formulas are encoded in the LaTeX typesetting system. | latex | List 196; Code 35: Accessible math content (as LaTeX) should be used with List 81; Code 48: Mathematical content |
3410#$avisual$blatex$2sapdv | - | - | - |
| Identifies that the LaTeX typesetting system is used to encode chemical equations and formulas. |
List 196; Code 54: Accessible chemistry content (as LaTeX) along with List 81; Code 47: Chemical content |
- | - | - | - | |
| Descriptions are provided for image-based visual content and/or complex structures such as tables, mathematics, diagrams, and charts. Note: Authors may set this property independent of the method they use to provide the extended descriptions (i.e., it is not required to use the obsolete [HTML] longdesc attribute). | longDescription |
List 196; Code 15: Full alternative descriptions List 196; Code 16: Visualised data also available as non-graphical data |
|
- | - | 231 $i15$2onix196 |
| Identifies that mathematical equations and formulas are encoded in [MathML]. | MathML | List 196; Code 17: Accessible math content | 3410#$avisual$bMathML$2sapdv | - | - | 231 $i17$2onix196 |
| Identifies that [[MathML]] is used to encode chemical equations and formulas. |
List 196; Code 34: Accessible chemistry content (as MathML) along with List 81; Code 47: Chemical content |
- | - | - | - | |
|
Indicates that the resource does not contain any accessibility features. The none value must not be set with any other feature value. |
none | List 196; Code 09: Inaccessible, or known limited accessibility |
532 2# $aLacks significant accessibility features. | - | - | 231 $i09$2onix196 |
| Indicates that synchronized captions are available for audio and video content. | openCaptions |
List 175; Code V211: Open captions along with List 175; Code V214: Textual description of audio |
341 0# $aauditory$bcaptions$2sapdv or 341 0# $avisual$bcaptions$2sapdv | - | - | - |
|
The resource includes static page markers, such as those identified by the doc-pagebreak role [[DPUB-ARIA-1.1]]. This value is most commonly used with ebooks for which there is a statically paginated equivalent, such as a print edition, but it is not required that the page markers correspond to another work. The markers may exist solely to facilitate navigation in purely digital works. |
|
List 196; Code 19: Print-equivalent page numbering (Source: print book) |
- | - | - | - |
|
Provides a unique identifier for the source of the page break markers in an EPUB publication. |
value of |
List 51; Code 13: Print-equivalent page numbering points from the digital publication to the physical version. or List 51; Code 27: Electronic version available points from the physical version to the digital publication. |
- | - | - | - |
|
The resource includes a means of navigating to static page break locations. The most common way of providing page navigation in digital publications is through a page list. The EPUB page-list navigation feature [[EPUB-33]] and the pagelist role [[DPUB-ARIA-1.1]] are two examples. |
List 196; Code 41: Page list navigation |
- | - | - | - | |
| The reading order of the content is clearly defined in the markup (e.g., figures, sidebars and other secondary content has been marked up to allow it to be skipped automatically and/or manually escaped from. | readingOrder | List 196; Code 13: Reading order | 3410#$atextual$breadingOrder$2sapdv | - | - | 231 $i13$2onix196 |
Indicates that ruby annotations [HTML] are provided in the content. Ruby
annotations are used as pronunciation guides for the logographic characters for languages
like Chinese or Japanese. It makes difficult Kanji or CJK ideographic characters more
accessible. The absence of rubyAnnotations implies that no CJK ideographic characters have
ruby. |
rubyAnnotations | - | 3410#$atextual$brubyAnnotations$2sapdv | - | - | - |
| Sign language interpretation is available for audio and video content. Note: Information about the sign language code used should be provided in the accessibility summary. | signLanguage | List 175; Code V213: Sign language interpretation |
3410#$aauditory$csignLanguage$2sapdv | - | - | - |
| The use of headings in the work fully and accurately reflects the document hierarchy, allowing navigation by assistive technologies. | structuralNavigation | List 196; Code 29: Next / Previous structural navigation |
3410#$atextual$bstructuralNavigation$2sapdv | - | - | - |
| Describes a resource that offers both audio and text, with information that allows them to be rendered simultaneously. The granularity of the synchronization is not specified. This term is not recommended when the only material that is synchronized is the document headings. | synchronizedAudioText | List 196; Code 20: Synchronised pre-recorded audio | 3410#$atextual$d synchronizedAudioText$2sapdv | - | - | 231 $i20$2onix196 |
| The work includes a table of contents that provides links to the major sections of the content. | tableOfContents | List 196; Code 11: Table of contents navigation | 3410#$atextual$btableofContents$2sapdv | - | - | 231 $i11$2onix196 |
| The contents of the PDF have been tagged to permit access by assistive technologies. | taggedPDF | List 196; Code 05: PDF/UA List 196; Code 06: PDF/UA-2 |
3410#$atextual$btaggedPDF$2sapdv | - | - | - |
|
tactileGraphic | – |
And 336 Content type ; 336 ##$atactile image$2rdacontent |
- | - | - |
|
tactileObject | – |
336 ##$atactile three-dimensional form$2rdacontent |
- | - | - |
| For content with timed interaction, this value indicates that the user can control the timing to meet their needs (e.g., pause and reset) | timingControl | - | 341$aauditory$dtimingControl$2sapdv or 341$avisual$dtimingControl$2sapdv | - | - | - |
| Indicates that a transcript of the audio content is available. | transcript | List 175; Code V212: Transcript |
341$aauditory$btranscript$2sapdv | - | - | - |
| One or more of [SSML], [Pronunciation-Lexicon], and [CSS3-Speech] properties has been used to enhance text-to-speech playback quality. | ttsMarkup | List 196; Code 21: Text-to-speech hinting provided; | 341$atext$bttsMarkup$2sapdv and 532 1# $a Text-to-speech has been optimised through provision of PLS lexicons, SSML or CSS Speech synthesis hints. | - | - | 231 $i21$2onix196 and/or 231 $i22$2onix196 |
| ONIX: The language of the text has been specified (eg via the HTML or XML lang attribute) to optimise text-to-speech (and other alternative renderings), both at whole document level and, where appropriate, for individual words, phrases or passages in a different language | - | List 196; Code 22: Language tagging provided | - | - | - | 231 $i21$2onix196 and/or 231 $i22$2onix196 |
|
Indicates that the author has not yet checked if the resource contains accessibility features. This value is only intended as a placeholder until an accessibility review can be completed. The unknown value must not be set with any other feature value. |
List 196; Code 08: Unknown accessibility |
- | - | - | - | |
| No digital rights management or other content restriction protocols have been applied to the resource. | unlocked | List 144; Code 00: None |
532 1# $aNo DRM (digital rights management) or other content restriction protocols have been applied to the resource. | - | - | - |
| Indicates that the content can be laid out vertically (e.g., using the vertical-rl of [[css-writing-modes-3]]). This value should only be set when the language of the content allows both horizontal and vertical directions. | - | - | - | - | - | |
| Indicates that the content can be rendered with additional word segmentation. | - | - | - | - | - | |
| Indicates that the content can be rendered without additional word segmentation. | - | - | - | - | - | |
|
ONIX: Where interactive content is included in the product, controls are provided (eg for speed, pause and resume, reset) and labelled to make their use clear. |
- |
List 196; Code 31: Accessible controls provided |
- | - | - | - |
| ONIX: Includes basic landmark navigation (usually less detailed than TOC-based navigation). | - |
List 196; Code 32: Landmark navigation |
- | - | - | - |
|
ONIX: For readers with color vision deficiency, use of color (eg in diagrams, graphs and charts, in prompts or on buttons inviting a response) is not the sole means of graphical distinction or of conveying information. See related value Color Dependent |
- |
List 196; Code 25: Use of color is not sole means of conveying information |
- | - | - | - |
| ONIX: The language of the text has been specified (eg via the HTML or XML lang attribute) to optimise text-to-speech (and other alternative renderings), both at whole document level and, where appropriate, for individual words, phrases or passages in a different language. | – | List 196; Code 22: Language tagging provided – helps with TTS in multi-lingual content | 532 1# $aThe language of the text has been specified (eg via the HTML or XML lang attribute) to optimise text-to-speech (and other alternative renderings), both at whole document level and, where appropriate, for individual words, phrases or passages in a different language. | - | - | 231 $i22$2onix196 |
ONIX: Specialised font, character and/or line spacing, justification and paragraph spacing, coloring and other options provided specifically to improve readability for dyslexic readers. Details, including the name of the font if relevant, should be listed in ProductFormFeatureDescription |
- | List 196; Code 24: Dyslexia readability | 532 1# $aSpecialised font, character and line spacing, justification and paragraph spacing, and coloring for dyslexic readers. | - | - | - |
ONIX: No accessibility features offered by the reading system, device or reading software (including but not limited to choice of text size or typeface, choice of text or background color, text-to-speech) are disabled, overridden or otherwise unusable with the product EXCEPT – in ONIX 3 messages only – those specifically noted as subject to restriction or prohibition in EpubUsageConstraint. Note that provision of any significant part of the textual content as images (ie as pictures of text, rather than as text, and without any textual equivalent) inevitably prevents use of these accessibility options. |
- | List 196; Code 10: No reading system accessibility options disabled (except) | 532 8# $aNo accessibility features offered by the reading system, device or reading software (including but not limited to choice of text size or typeface, choice of text or background color, text-to-speech) are disabled, overridden or otherwise unusable with the product. | - | - | 231 $i10$2onix196 |
| ONIX: All or substantially all textual matter is arranged in a single logical reading order (including text that is visually presented as separate from the main text flow, eg in boxouts, captions, tables, footnotes, endnotes, citations, etc). Non-textual content is also linked from within this logical reading order. | - | List 196; Code 13: Single logical reading order | - | - | - | - |
| ONIX: E-publication provides explanations for unusual words, abbreviations, acronyms, idioms, jargon in an accessible form, such as glossaries, scripted pop-ups. | - | List 196; Code 38: Unusual words or abbreviations explained | - | - | - | - |
| ONIX: All supplementary visual or textual material necessary for understanding of an audiobook, is available as pre-recorded audio, or has full alternative text that can be read via text-to- speech. | - | List 196; Code 39: Supplementary material to an audiobook is accessible | - | - | - | - |
| ONIX: Where links, controls or buttons are included in the product, the purpose or functionality of each link, control or button is apparent from the associated text alone – or where it is unclear, separate link, control or button descriptions are provided. | - | List 196; Code 40: Link purposes clear | - | - | - | - |
| ONIX: <ProductFormFeatureDescription> contains a date in the YYYYMMDD format of the latest assessment or re-assessment of the accessibility of the product. (Note that changes to or re-confirmation of individual accessibility features, standards conformance or certification may be highlighted with a timestamp attribute on the relevant repeat of <ProductFormFeature>). | - | List 196; Code 91: Latest accessibility assessment date | - | - | - | - |
| ONIX: <ProductFormFeatureDescription> carries the URL of a web page giving a short description of compatibility testing carried out for this product, including detailed compatibility with various assistive technology such as third-party screen-reading software. See also code 00 for a summary of the accessibility features of the product itself | - | List 196; Code 97: Compatibility tested | - | - | - | - |
| ONIX: <ProductFormFeatureDescription> carries the e-mail address for a contact at a ‘trusted intermediary’, to whom detailed questions about accessibility for this product may be directed | - | List 196; Code 98: Trusted Intermediary contact | - | - | - | - |
| ONIX: <ProductFormFeatureDescription> carries the e-mail address for a contact at the publisher to whom detailed questions about accessibility of this product may be directed | - | List 196; Code 99: Publisher contact for further accessibility information | - | - | - | - |
| Definition | Schema.org | ONIX | Schema.org in MARC21 | ONIX to Schema in MARC21 | ONIX in MARC21 using ONIX Codes* | UNIMARC |
|---|---|---|---|---|---|---|
| Indicates that the resource presents a flashing hazard for photosensitive persons. This value should be set when the content meets the hazard thresholds described in Success Criterion 2.3.1 Three Flashes or Below Threshold [WCAG2]. | flashing | List 143; Code 13: WARNING – Flashing hazard |
532 8# $a The resource presents a flashing hazard for photosensitive persons. | - | *Awaiting clarification on recording ONIX codes in MARC21 | - |
| Indicates that the resource does not present a flashing hazard. This value should be set when the content conforms to Success Criterion 2.3.1 Three Flashes or Below Threshold [WCAG2]. | noFlashingHazard | List 143; Code 14: No flashing hazard warning necessary |
532 8# $a This resource does not present a flashing hazard. | - | - | - |
|
Indicates that it is unknown if any flashing hazards exist within the content. The unknownFlashingHazard value must not be set when either of the flashing or noFlashingHazard values is set. It should not be set when the none value is set. It should not be set when the unknown value is set. |
List 143; Code 24: Flashing risk unknown |
- | - | - | - | |
| Indicates that the resource contains instances of motion simulation that may affect some individuals. Some examples of motion simulation include video games with a first-person perspective and CSS-controlled backgrounds that move when a user scrolls a page. | motionSimulation | List 143; Code 17: WARNING – Motion simulation hazard |
532 8# $a Contains instances of motion simulation that may affect some individuals. | - | - | 231 $i17$2onix143 |
| Indicates that the resource does not contain instances of motion simulation. | noMotionSimulationHazard | List 143; Code 18: No motion simulation hazard warning necessary |
532 8# $a This resource does not contain instances of motion simulation. | - | - | - |
|
Indicates that it is unknown if any motion simulation hazards exist within the content. The unknownMotionSimulation value must not be set when either of the motionSimulation or noMotionSimulationHazard values is set. It should not be set when the none value is set. It should not be set when the unknown value is set. |
List 143; Code 26: Motion simulation unknown |
- | - | - | - | |
| Indicates that the resource contains auditory sounds that may affect some individuals. Editor's note: The application of this value is currently under discussion as its application is underspecified. | sound | List 143; Code 15: WARNING – Sound hazard List 175; Code A310: Sound effects Incidental sounds added to the audiobook narration (eg background environmental sounds). (may not correspond to a hazard) |
532 8# $a Contains auditory sounds that may affect some individuals. | - | - | 231 $iA310$2onix175 |
| Indicates that the resource does not contain auditory hazards. Editor's note: The application of this value is currently under discussion as its application is underspecified. | noSoundHazard | List 143; Code 16: No sound hazard warning necessary |
532 8# $a This resource does not contain auditory hazards. | - | - | - |
|
Indicates that it is unknown if any auditory hazards exist within the content. The unknownSoundHazard value must not be set when either of the sound or noSoundHazard values is set. It should not be set when the none value is set. It should not be set when the unknown value is set. |
List 143; Code 25: Sound risk unknown |
- | - | - | - | |
| Indicates that the resource does not contain any hazards. | none | List 143; Code 00: No known hazards or warnings |
- | - | - | - |
| Indicates that it is unknown if any hazards exist within the content. | unknown | - | 532 8# $a This resource has not been evaluated for hazard risks. | - | - | - |
The human sensory perceptual system or cognitive faculty through which a person may process or perceive information.
| Definition | Schema.org | ONIX | Schema.org in MARC21 | ONIX to Schema in MARC21 | ONIX in MARC21 using ONIX Codes* | UNIMARC |
|---|---|---|---|---|---|---|
| Indicates that the resource contains information encoded in auditory form. Note: This value is not set when the auditory content conveys no information. For example, an instructional video might include background music while all the necessary information to complete the task is conveyed visually and/or through text captions. | auditory |
Use the most relevant ones and use 01 if unsure
|
341 0#$aauditory; Also: 336 ##$aperformed music$2rdacontent; 336 ##$asounds$2rdacontent; 336 ##$aspoken word$2rdacontent; 344 ## $i sound | - | *Awaiting clarification on recording ONIX codes in MARC21 | - |
| Indicates that the resource contains charts encoded in visual form. | chartOnVisual | List 81; Code 19: Figures, Diagrams, Charts | 341 0 $avisual; 532 8# $aResource contains charts encoded in visual form. | - | - | 231 $i19$2onix81 |
| Indicates that the resource contains chemical equations encoded in visual form. | chemOnVisual | List 81; Code 47: Chemical content |
341 0# $avisual; 532 8# $aResource contains chemical equations encoded in visual form. | - | - | - |
|
Indicates that the resource contains information encoded such that color perception is necessary. See related value Use of Color. |
colorDependent | – | 532 2# $aThe resource contains information encoded in such that color perception is necessary. | - | - | - |
| Indicates that the resource contains diagrams encoded in visual form. | diagramOnVisual | List 81; Code 19: Figures, Diagrams, Charts | 341 0# $avisual; 532 8# $a Resource contains diagrams encoded in visual form. | - | - | 231 $i19$2onix81 |
| Indicates that the resource contains mathematical notations encoded in visual form. | mathOnVisual | List 81; Code 48: Mathematical content |
341 0# $avisual; 532 8# $a Resource contains mathematical notations encoded in visual form. | - | - | - |
| Indicates that the resource contains musical notation encoded in visual form. | musicOnVisual | List 81; Code 11: Musical notation |
341 0# $avisual; 532 8# $a Resource contains music encoded in visual form. | - | - | - |
| Indicates that the resource contains information encoded in tactile form. Note that although an indication of a tactile mode often indicates the content is encoded using a braille system, this is not always the case. Tactile perception may also indicate, for example, the use of tactile graphics to convey information. | tactile | - | 341 0#$atactile | - | - | - |
| Indicates that the resource contains text encoded in visual form. | textOnVisual | List 81; Code 49: Images of text |
341 0# $avisual; 532 8# $a Resource contains text encoded in visual form. | - | - | - |
| Indicates that the resource contains information encoded in textual form. Note: This value is not set if the only textual content is for navigational purposes. For example, an audiobook might include a table of contents, but it is not necessary to read the table of contents to read the work. Likewise, books with synchronized text-audio playback may only include headings to allow structured navigation. | textual |
|
341 0# $atextual | - | - | - |
| Indicates that the resource contains information encoded in visual form. Note: This value is not set if the only visual imagery is presentational or not directly relevant to understanding the content. Examples of this type of imagery include cover images for publications, corporate logos, and purely decorative images. | visual |
Use the most relevant code
|
341 0# $avisual; Also:
|
- | - | 231 $i07$2onix81 |
A list of single or combined accessModes that are sufficient to understand all the intellectual content of a resource.
ONIX crosswalks are for instances where accessModeSufficient includes this vocabulary entry alone; combinations may occur but are more difficult to crosswalk
| Definition | Schema.org | ONIX | Schema.org in MARC21 | ONIX to Schema in MARC21 | ONIX in MARC21 using ONIX Codes* | UNIMARC |
|---|---|---|---|---|---|---|
| Indicates that auditory perception is necessary to consume the information. | auditory |
List 196; Code 51: All non-decorative content supports reading via pre-recorded audio or List 81; Code 01: Audiobook or both combined List 196; Code 51: All non-decorative content supports reading via pre-recorded audio and List 81; Code 01: Audiobook |
341 0#$aauditory$2sapdv | - | *Awaiting clarification on recording ONIX codes in MARC21 | 181 #0 $cspw$2rdacontent (may correspond only to human narration) |
| Indicates that tactile perception is necessary to consume the information. | tactile | - | 341 0#$atactile$2sapdv | - | - | - |
| Indicates that the resource contains information encoded in textual form. Note: This value is not set if the only textual content is for navigational purposes. | textual |
List 196; Code 52: All non-decorative content supports reading without sight |
341 0#$atextual$2sapdv | - | - | - |
| Indicates that the resource contains some information encoded in textual form, but that visual perception is necessary to consume other parts of the resource. |
or |
– | - | - | - | - |
| Indicates that visual perception is necessary to consume the information. | visual | – | 341 0#$avisual$2sapdv | - | - | - |
A human-readable summary of specific accessibility features or deficiencies, consistent with the other accessibility metadata but expressing subtleties such as "short descriptions are present but long descriptions will be needed for non-visual users" or "short descriptions are present and no long descriptions are needed."
| Definition | Schema.org | ONIX | Schema.org in MARC21 | ONIX to Schema in MARC21 | ONIX in MARC21 using ONIX Codes* | UNIMARC |
|---|---|---|---|---|---|---|
| The accessibilitySummary property is a free-form field that allows authors to describe the accessible properties of the resource. As a result, it does not have an associated vocabulary. | accessibilitySummary |
List 196; Code 00: Accessibility Summary - contains a short explanatory summary of the accessibility of the product. Used when the summary includes information also conveyed using other ONIX codes. Additionally List 196; Code 92: Accessibility Addendum - contains a short addendum to the accessibility detail of the product. Used when the summary is for information not conveyed with other ONIX codes. |
532 8# $a [Text] | - | *Awaiting clarification on recording ONIX codes in MARC21 | 231 $i00$2onix196 |
The metadata field accessibilityAPI does not apply to digital publications directly but rather to reading system software. We do not include it in this crosswalk.
The metadata field accessibilityControl does not apply to digital publications directly but rather to reading system software. We do not include it in this crosswalk.
The editors would like to thank Christopher Saynor (Editeur), and Chris Carr for their invaluable contributions to this document.