manifest

const (
	// Indicates that the resource contains information encoded in auditory form.
	A11yAccessModeAuditory A11yAccessMode = "auditory"

	// Indicates that the resource contains charts encoded in visual form.
	A11yAccessModeChartOnVisual A11yAccessMode = "chartOnVisual"

	// Indicates that the resource contains chemical equations encoded in visual form.
	A11yAccessModeChemOnVisual A11yAccessMode = "chemOnVisual"

	// Indicates that the resource contains information encoded such that color perception is necessary.
	A11yAccessModeColorDependent A11yAccessMode = "colorDependent"

	// Indicates that the resource contains diagrams encoded in visual form.
	A11yAccessModeDiagramOnVisual A11yAccessMode = "diagramOnVisual"

	// Indicates that the resource contains mathematical notations encoded in visual form.
	A11yAccessModeMathOnVisual A11yAccessMode = "mathOnVisual"

	// Indicates that the resource contains musical notation encoded in visual form.
	A11yAccessModeMusicOnVisual A11yAccessMode = "musicOnVisual"

	// 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.
	A11yAccessModeTactile A11yAccessMode = "tactile"

	// Indicates that the resource contains text encoded in visual form.
	A11yAccessModeTextOnVisual A11yAccessMode = "textOnVisual"

	// Indicates that the resource contains information encoded in textual form.
	A11yAccessModeTextual A11yAccessMode = "textual"

	// Indicates that the resource contains information encoded in visual form.
	A11yAccessModeVisual A11yAccessMode = "visual"
)

const (
	// The work includes annotations from the author, instructor and/or others.
	A11yFeatureAnnotations A11yFeature = "annotations"

	// Indicates the 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].
	A11yFeatureAria A11yFeature = "ARIA"

	// The work includes bookmarks to facilitate navigation to key points.
	A11yFeatureBookmarks A11yFeature = "bookmark"

	// The work includes an index to the content.
	A11yFeatureIndex A11yFeature = "index"

	// The work includes equivalent print page numbers. This setting is most commonly used
	// with ebooks for which there is a print equivalent.
	A11yFeaturePrintPageNumbers A11yFeature = "printPageNumbers"

	// 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).
	A11yFeatureReadingOrder A11yFeature = "readingOrder"

	// The use of headings in the work fully and accurately reflects the document hierarchy,
	// allowing navigation by assistive technologies.
	A11yFeatureStructuralNavigation A11yFeature = "structuralNavigation"

	// The work includes a table of contents that provides links to the major sections of the content.
	A11yFeatureTableOfContents A11yFeature = "tableOfContents"

	// The contents of the PDF have been tagged to permit access by assistive technologies.
	A11yFeatureTaggedPDF A11yFeature = "taggedPDF"

	// Alternative text is provided for visual content (e.g., via the HTML `alt` attribute).
	A11yFeatureAlternativeText A11yFeature = "alternativeText"

	// Audio descriptions are available (e.g., via an HTML `track` element with its `kind`
	// attribute set to "descriptions".
	A11yFeatureAudioDescription A11yFeature = "audioDescription"

	// Indicates that synchronized captions are available for audio and video content.
	A11yFeatureCaptions A11yFeature = "captions"

	// Textual descriptions of math equations are included, whether in the alt attribute
	// for image-based equations,
	A11yFeatureDescribedMath A11yFeature = "describeMath"

	// Descriptions are provided for image-based visual content and/or complex structures
	// such as tables, mathematics, diagrams, and charts.
	A11yFeatureLongDescription A11yFeature = "longDescription"

	// 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.
	A11yFeatureRubyAnnotations A11yFeature = "rubyAnnotations"

	// Sign language interpretation is available for audio and video content.
	A11yFeatureSignLanguage A11yFeature = "signLanguage"

	// Indicates that a transcript of the audio content is available.
	A11yFeatureTranscript A11yFeature = "transcript"

	// 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.
	A11yFeatureDisplayTransformability A11yFeature = "displayTransformability"

	// 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.
	A11yFeatureSynchronizedAudioText A11yFeature = "synchronizedAudioText"

	// For content with timed interaction, this value indicates that the user can control
	// the timing to meet their needs (e.g., pause and reset)
	A11yFeatureTimingControl A11yFeature = "timingControl"

	// No digital rights management or other content restriction protocols have been applied
	// to the resource.
	A11yFeatureUnlocked A11yFeature = "unlocked"

	// Identifies that chemical information is encoded using the ChemML markup language.
	A11yFeatureChemML A11yFeature = "ChemML"

	// Identifies that mathematical equations and formulas are encoded in the LaTeX
	// typesetting system.
	A11yFeatureLatex A11yFeature = "latex"

	// Identifies that mathematical equations and formulas are encoded in MathML.
	A11yFeatureMathML A11yFeature = "MathML"

	// One or more of SSML, Pronunciation-Lexicon, and CSS3-Speech properties has been used
	// to enhance text-to-speech playback quality.
	A11yFeatureTTSMarkup A11yFeature = "ttsMarkup"

	// Audio content with speech in the foreground meets the contrast thresholds set out
	// in WCAG Success Criteria 1.4.7.
	A11yFeatureHighContrastAudio A11yFeature = "highContrastAudio"

	// Content meets the visual contrast threshold set out in WCAG Success Criteria 1.4.6.
	A11yFeatureHighContrastDisplay A11yFeature = "highContrastDisplay"

	// The content has been formatted to meet large print guidelines.
	//
	// The property is not set if the font size can be increased. See DisplayTransformability.
	A11yFeatureLargePrint A11yFeature = "largePrint"

	// The content is in braille format, or alternatives are available in braille.
	A11yFeatureBraille A11yFeature = "braille"

	// When used with creative works such as books, indicates that the resource includes
	// tactile graphics. When used to describe an image resource or physical object,
	// indicates that the resource is a tactile graphic.
	A11yFeatureTactileGraphic A11yFeature = "tactileGraphic"

	// When used with creative works such as books, indicates that the resource includes models
	// to generate tactile 3D objects. When used to describe a physical object,
	// indicates that the resource is a tactile 3D object.
	A11yFeatureTactileObject A11yFeature = "tactileObject"

	// Indicates that the resource does not contain any accessibility features.
	A11yFeatureNone A11yFeature = "none"
)

const (
	// Indicates that the resource presents a flashing hazard for photosensitive persons.
	A11yHazardFlashing A11yHazard = "flashing"

	// Indicates that the resource does not present a flashing hazard.
	A11yHazardNoFlashingHazard A11yHazard = "noFlashingHazard"

	// 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.
	A11yHazardMotionSimulation A11yHazard = "motionSimulation"

	// Indicates that the resource does not contain instances of motion simulation.
	A11yHazardNoMotionSimulationHazard A11yHazard = "noMotionSimulationHazard"

	// Indicates that the resource contains auditory sounds that may affect some individuals.
	A11yHazardSound A11yHazard = "sound"

	// Indicates that the resource does not contain auditory hazards.
	A11yHazardNoSoundHazard A11yHazard = "noSoundHazard"

	// Indicates that the author is not able to determine if the resource presents any hazards.
	A11yHazardUnknown A11yHazard = "unknown"

	// Indicates that the resource does not contain any hazards.
	A11yHazardNone A11yHazard = "none"
)

const (
	// Indicates that auditory perception is necessary to consume the information.
	A11yPrimaryAccessModeAuditory A11yPrimaryAccessMode = "auditory"

	// Indicates that tactile perception is necessary to consume the information.
	A11yPrimaryAccessModeTactile A11yPrimaryAccessMode = "tactile"

	// Indicates that the ability to read textual content is necessary to consume the information.
	//
	// Note that reading textual content does not require visual perception, as textual content
	// can be rendered as audio using a text-to-speech capable device or assistive technology.
	A11yPrimaryAccessModeTextual A11yPrimaryAccessMode = "textual"

	// Indicates that visual perception is necessary to consume the information.
	A11yPrimaryAccessModeVisual A11yPrimaryAccessMode = "visual"
)

const (
	// EPUB Accessibility 1.0 - WCAG 2.0 Level A
	EPUBA11y10WCAG20A A11yProfile = "http://www.idpf.org/epub/a11y/accessibility-20170105.html#wcag-a"
	// EPUB Accessibility 1.0 - WCAG 2.0 Level AA
	EPUBA11y10WCAG20AA A11yProfile = "http://www.idpf.org/epub/a11y/accessibility-20170105.html#wcag-aa"
	// EPUB Accessibility 1.0 - WCAG 2.0 Level AAA
	EPUBA11y10WCAG20AAA A11yProfile = "http://www.idpf.org/epub/a11y/accessibility-20170105.html#wcag-aaa"
)

const (
	EPUBLayoutFixed      EPUBLayout = "fixed"
	EPUBLayoutReflowable EPUBLayout = "reflowable"
)

const (
	FitWidth   Fit = "width"
	FitHeight  Fit = "height"
	FitContain Fit = "contain"
	FitCover   Fit = "cover"
)

const (
	OrientationAuto      Orientation = "auto"
	OrientationLandscape Orientation = "landscape"
	OrientationPortrait  Orientation = "portrait"
)

const (
	OverflowAuto      Overflow = "auto"
	OverflowPaginated Overflow = "paginated"
	OverflowScrolled  Overflow = "scrolled"
)

const (
	PageLeft   Page = "left"
	PageRight  Page = "right"
	PageCenter Page = "center"
)

const (
	Auto ReadingProgression = "auto"
	LTR  ReadingProgression = "ltr"
	RTL  ReadingProgression = "rtl"
	TTB  ReadingProgression = "ttb"
	BTT  ReadingProgression = "btt"
)

const (
	SpreadAuto      Spread = "auto"
	SpreadBoth      Spread = "both"
	SpreadNone      Spread = "none"
	SpreadLandscape Spread = "landscape"
)