Accessibility glossary

Text linked to the table that identifies the content of a data table clearly and concisely.

shortened form of a word, phrase, or name where the abbreviation has not become part of the language

The image is declared as "decorative" (for example in Microsoft Office) or "artefact" (Acrobat Pro), so that it is not part of the content made…

Examples of accessibility features: a component for loading a more contrasting colour palette for users; a font size enlargement component; a…

Accessibility information is all the information (attributes, programmatic relationships, alternatives, etc.) required to make content accessible.…

supported by users' assistive technologies (opens in a new tab) as well as the accessibility features in browsers and other user agents (opens in a…

In the framework, the expression "operable by keyboard and any pointing device" also refers to this definition.

"Accessible name" rendered by assistive technologies.

For information to be accessible to assistive technologies, it must be made available to them, either through the software itself or via an…

Downloadable documents whose format types are recognised as compatible with accessibility must be made accessible either directly or via an…

Downloadable documents whose format types are recognised as compatible with accessibility must be made accessible either directly or via an…

Activation time for blinking or moving content: time during which the blinking or movement is active.

Adjacent background colour: background colour directly in contact with the outer edge of the user interface component or graphic element .

Colour directly in contact with the colours of the component or graphic element, this can be the background colour or any other colour in direct…

Colour directly in contact with the colours of the graphic element, such as the background colour or any other colour in direct contact.

Link or button presented adjacent to an element on the page. The link or button must be visually adjacent in the graphic representation (CSS enabled)…

An "audio only" version is an audio version, in the form of a simple file in MP3 format for example, used as an alternative to a video only (video…

Text or process associated with the script by means of an appropriate technique and enabling a function or content similar to that offered by the…

Content that replaces another providing the same information but may be presented in a different way. This content may be in text form, but it may…

document including correctly sequenced text descriptions of time-based visual and auditory information and providing a means for achieving the…

Text identical to the content of an image of text. The alternative version can be made available by means of an anchor adjacent to the image or a…

Intent cannot be determined from the link and all the information on the web page presented to the user at the same time as the link (i.e. a reader…

A user interface component whose activation allows the appearance of the site or page to be modified so that content is displayed with a sufficient…

picture created by a spatial arrangement of characters or glyphs (typically from the 95 printable characters defined by ASCII)

hardware and/or software that acts as a user agent (opens in a new tab) , or along with a mainstream user agent, to provide functionality to meet the…

the technology of sound reproduction: Note: Audio can be created synthetically (including speech synthesis), recorded from real world sounds, or…

narration added to the soundtrack to describe important visual details that cannot be understood from the main soundtrack alone

Narration added (via a sound file) to an audio track to describe important visual details that cannot be understood from the main audio track alone.…

a time-based presentation that contains only audio (opens in a new tab) (no video (opens in a new tab) and no interaction)

User identification or control methods based on biological characteristics may be, for example

switch back and forth between two visual states in a way that is meant to draw attention

This is generally content produced using animated images (e.g. GIF format).

more than one sentence of text: Source: WCAG 2.2 definition of “blocks of text” (opens in a new tab) (W3C)

Element of a form that allows you to perform a predefined action. For example, the submit button on a form sends the collected information to the…

Links whose function is to allow navigation within the page (skip link, link to the search form or menu, etc.). These links can be used either to…

A CAPTCHA is a test used to distinguish a human user from a computer. The test often uses images containing distorted text, mixed with other shapes…

synchronized visual and/or text alternative (opens in a new tab) for both speech and non-speech audio information needed to understand the media…

Major changes that, if made without user awareness, can disorient users who are not able to view the entire page simultaneously.

The element is made available adjacent to the object identified by the criterion in the graphical representation and in the keyboard navigation…

Region of a responsive image to which an action has been associated; for example, triggering an event by clicking on a link (for a client-side…

A task that requires the user to remember, manipulate, or transcribe information. Examples include, but are not limited to:

Content of a cell in a data table (usually the first cell in a column or row) which serves as the heading for all or some of the cells in the column…

Content or feature must be compatible with assistive technologies and with the accessibility functions of browsers and other user agents via an…

A complex action is one in which the downward and upward actions of the pointer are inseparable events in the action, so that it is not possible for…

A simple gesture involves touching a single point on the screen. It can be a single press or click, a double press or click, or a long press.

A data table is a structure introduced by a tag or when it is correctly rendered by assistive technologies by a tag with a WAI-ARIA role="table"…

This refers to content such as diagrams or schemas created by the drawing, schema and diagram generation tools offered by office editing tools.

An interactive component mixed with non-interactive elements (text, for example) and which is not visually distinguishable from the non-interactive…

In HTML, link containing both text and one or more image children:

The ARIA role of an element can be computed in two ways:

satisfying all the requirements of a given standard, guideline or specification

version that: conforms at the designated level, and provides all of the same information and functionality (opens in a new tab) in the same human…

Understandable content is readable (the order of the elements is logical) and coherent (the reading sequence is consistent).

Form field labels present on the same page or in a set of web pages and requiring the same information to be entered must be worded unambiguously so…

information and sensory experience to be communicated to the user by means of a user agent (opens in a new tab) , including code or markup that…

help text that provides information related to the function currently being performed

Marked opposition between the luminosity of a foreground colour and a background colour. The contrast ratio is based on the difference in relative…

The standard distinguishes between several sizes of text to be evaluated, each size having a contrast threshold. These sizes are evaluated in pixels…

(L1 + 0.05) / (L2 + 0.05), where: L1 is the relative luminance (opens in a new tab) of the lighter of the colors, and L2 is the relative luminance…

Allows the user to stop or restart an automatically triggered sound.

The ability for the user to control the display or playback of moving or blinking content using at least the keyboard and mouse.

Any environment in which access to information, technologies, conditions of use and user profiles can be known and controlled. The main elements…

A complex image or form that contains at least one piece of information essential to understanding the content with which it is associated.

any sequence where words and paragraphs are presented in an order that does not change the meaning of the content

When a criterion, test or test condition requires the rendering of a device to be checked, it must be ensured that the rendering is compatible with…

Content written using misused characters. For example, emoticons, figures written with characters, symbol characters or text written with…

visual angle of about 0.0213 degrees: A CSS pixel is the canonical unit of measure for all lengths and measurements in CSS. This unit is…

This concerns the following properties: color , background-color , background , border-color , border , outline-color , outline .

A data table is a structure introduced by a tag or when it is correctly rendered by assistive technologies by a tag with a WAI-ARIA role="table"…

Data table with an attribute or containing a tag whose content acts as a title.

Indication of the data type and format expected when entering a form input field. For example

An image or complex shape that does not provide any information essential to understanding the content with which it is associated.

Graphic element having no function and conveying no specific information in relation to the content with which it is associated. Examples:

Image with no function and conveying no particular information in relation to the content with which it is associated.

Indication of the document's main processing language, which may be present on the html root element or on each element of the relevant page via the…

A design pattern is a model defined in the WAI-ARIA 1.1 Authoring Practices (opens in a new tab) document which describes the structure, roles and…

Content associated with a graphic element in addition to its textual alternative in order to fully describe the information conveyed by the element.

Content associated with an image in addition to its text alternative in order to fully describe the information conveyed by the image. The detailed…

Sometimes a graphic element is presented in different states. For example, a star voting system where the number of stars of a certain colour…

The generic term "digital accessibility rules" refers to the RAWeb , the RAAM , the RAPDF or the EN 301 549 standard (opens in a new tab) , depending…

File, set of files, streaming media or any other distinct content that does not constitute a collection of items, does not belong to a software and…

Set of elements used to define the main areas of an HTML page, such as the page header region, the main and secondary navigation regions, the main…

Metadata used to give a title to the document, generally entered in the document properties.

Set of reference data which allows user agents to know the technical characteristics of the languages used on the web page ( doctype tag).

The documentation for a website or support service can be

platform event that occurs when the trigger stimulus of a pointer is depressed

an operation where the pointer engages with an element on the down-event (opens in a new tab) and the element (or a representation of its position)…

A web application or editing component in a web page that allows content to be created or modified for distribution to other users. An editing tool…

a sudden, unexpected situation or occurrence that requires immediate action to preserve health, safety, or property

Text and image of text at enlarged size is greater than or equal to 150% or 120% bold compared to the default size.

All the processes that warn the user about:

A set of processes that warn the user of mandatory fields, expected type or format indications and input errors in a form. Error management can be…

if removed, would fundamentally change the information or functionality of the content, and information and functionality cannot be achieved in…

Explicit indication (e.g. "See caption below") or common term (e.g. "Image: [alternative]" and "Image: [caption]") between the alternative and the…

audio description that is added to an audiovisual presentation by pausing the video (opens in a new tab) so that there is time to add additional…

a pair of opposing changes in relative luminance (opens in a new tab) that can cause seizures in some people if it is large enough and in the right…

pixels that are changed to visually indicate when a user interface component (opens in a new tab) is in a focused state (opens in a new tab)

Value assigned to the fonts on a web page.

This contains information about the operation of the site or legal information. For example, you will find the legal notice, credits, terms of use,…

A form does not necessarily have to be wrapped in a tag or a tag with a WAI-ARIA role="form" attribute.

Interactive object allowing the user to enter data. Form input fields cover a wide range of input types:

Text close to the form field that indicates the nature, type or format of the information expected. The label can be associated with the form field…

Object of a form allowing the user to: Enter textual or pre-formatted data: input type="text" ; input type="password" ; input type="search" ; input…

Frame: HTML element ( tag) used to display content on the web page in which it is implemented.

value of the title attribute of the or tag, used to identify the nature of the content displayed via the frame when the user navigates from frame to…

processes (opens in a new tab) and outcomes achievable through user action

a flash (opens in a new tab) or rapidly changing image sequence is below the threshold (i.e., content passes ) if any of the following are true:

Element using a visual representation such as images, pictograms or graphics.

A graphic element that conveys information needed to understand the content with which it is associated.

When a text adjacent to a graphic element contains information about the graphic element (e.g. copyright, date, author, etc.) or is intended to…

Cell used as a heading for a column, a row, part of a column, part of a row or groups of rows or columns (merged header).

Area at the top of the document generally containing the document title, a logo, a slogan, etc

HTML element ( h tag) with 6 levels of hierarchy (from h1 for the most important heading to h6 for the least important) or HTML element with WAI-ARIA…

In most office publishing software, the style library proposes a specific style for each heading level, generally up to six levels.

In office content, headings must be declared using a heading style. For example, office suites provide a library of styles reserved for headings. By…

Any feature available from a content editing interface, whatever the target format, which supports the author of the content in taking into account…

Assistive technologies (in particular screen readers) do not render content hidden via

language that is spoken, written or signed (through visual or tactile means) to communicate with humans

Links whose accessible names, combined with the link context (previous heading, sentence) are identical.

Two links are said to be identical when the accessible name of link x is equal to the one of link y. This definition applies to all types of links:…

phrase whose meaning cannot be deduced from the meaning of the individual words and the specific words cannot be changed without losing the meaning

Rendering elements such as decorative graphic elements that do not provide relevant information can create complex consultation conditions by…

When a text adjacent to an image contains information about the image (e.g. copyright, date, author, etc.) or is intended to supplement the…

An image that conveys information necessary for understanding the content with which it is associated.

An image in which all or part of the content visually conveys information through colour alone.

In HTML, link containing only one or more children of the image type

Note: in HTML5, the ismap attribute is obsolete and non-compliant for image type buttons ( input type="image" ).

The clickable or non-clickable area of a client-side image map, or the clickable area of a server-side image map.

Image displaying text. Note: the use of image of text is not recommended. Where it is possible to reproduce the same effects in CSS, critère 1.8…

Image generated by the tag and displaying text.

For example: The presence of a visual marker, to indicate the active page in a navigation menu (indication given by position); Foregrounding to…

Any essential indication that is conveyed only by a change in the shape or size of text content or by the position of an element in a text.

Text indication enabling the user to know what type of data and/or input format is required.

Text or graphic indication (icon) letting the user know whether a field is mandatory or optional before entering data.

Information conveyed visually through colour. The indication that fields in red are mandatory in a form, the use of a blue background to indicate the…

Information conveyed visually by means of colour. For example

for information purposes and not required for conformance

information provided by the user that is not accepted

For character-by-character input, the smallest text input unit is the character.

In a drop-down list ( tag), a set of items ( tags) which can be grouped together according to their nature. The purpose of grouping is to identify…

words used in a particular way by people in a particular field

It is possible to apply presentation effects to captions (text colour, style, font) in order to convey information to users (e.g. identify the person…

Feature which consists of printing (on the screen, in an input zone for example) a character several times as long as the corresponding key on the…

interface used by software to obtain keystroke input

A means of triggering an action associated with a user interface component by pressing one or more keys.

A keyboard trap occurs when a user navigating with the keyboard from a position on the screen (e.g. a form field, a button, a complex component)…

Text associated with a form input field, allowing the nature of the input to be identified and understood.

The label and its field must be visually close so that the relationship between the two cannot lead to confusion.

WAI-ARIA provides roles that enable navigation landmarks to be identified. These roles are very useful for screen reader users in particular, but…

Indicating language changes is necessary to tell assistive technologies to modify the speech output of an element. Language changes affect all…

A 2-character (ISO 639-1) or 3-character (ISO 639-2 and following) code used to indicate the language of a document or passage of text. The language…

with at least 18 point or 14 point bold or font size that would yield equivalent size for Chinese, Japanese and Korean (CJK) fonts

Technique which uses an HTML element ( tag) to control the display of information via cells ( tag).

transactions where the person incurs a legally binding obligation or benefit

HTML provides a way of titling groups of related form controls using the elements and .

The order in which the content of a presentation table is displayed when the content is scanned cell by cell.

In HTML: tag with a href attribute; Tag with a WAI-ARIA role="link" attribute and whose navigation action is handled by a script. In SVG tag with…

The link context represents the additional information (referred to as context information) that can be related by a computer program to the…

nature of the result obtained by activating a hyperlink

A link which can be confused with normal text when it is indicated by colour alone by certain types of users who have little or no perception of…

The list of available values (opens in a new tab) is provided by the WCAG 2.1 specification:

In office content, lists must be declared using a list style. For example, office suites provide a library of styles reserved for unordered lists…

A sequence of elements which can be grouped together in the form of a structured ordered, unordered or definition list. For example, the sequence of…

information captured from a real-world event and transmitted to the receiver with no more than a broadcast delay

the two or three year period of education that begins after completion of six years of school and ends nine years after the beginning of primary…

Area containing the main content of the page, where the background information and functions are located (i.e. outside the menus, search or secondary…

The main functions are the basic functions of a media player: play, pause, stop, sound control.

Textual or graphic indication (icon) letting the user know that a field is mandatory before entering it.

process (opens in a new tab) or technique for achieving a result

Interface component or set of interface components used to activate a feature that takes into account one or more adaptation needs of the interface.…

A user interface component whose activation allows the appearance of the site or page to be modified so that content is displayed with a sufficient…

User interface component or set of user interface components used to activate a functionality that takes into account one or more adaptation needs of…

Interface component whose activation enables the appearance of the site or page to be modified so as to display the contents with a sufficient…

media that presents no more information than is already presented in text (directly or via text alternatives)

A list of links for specific navigation within the site, a section or a collection of pages.

the smallest enclosing rectangle aligned to the horizontal axis within which all the points of a shape lie. For components which wrap onto multiple…

Procedures by which a user can modify the data they have entered, have their entry cancelled or have the actions resulting from their entry…

Processes by which a user can modify the data they have entered, have their entry cancelled or have actions resulting from their entry cancelled, for…

addition of steps between conditions to create the illusion of movement or to give a sense of a smooth transition

text by which software can identify a component within web content to the user

A component must have an appropriate role and name. Its values, states and any parameters must also be accessible and correctly passed on to the…

Platforms have native controls, for example a native color picker for colour selection, a calendar or a specific field containing the format control…

navigated in the order defined for advancing focus (from one element to the next) using a keyboard interface (opens in a new tab)

Order in which the focus moves (to the next element or to the previous element). The natural order is the one implemented in the source code. When it…

Any process enabling navigation within the site or within a page. The navigation systems used are

Region of an image map to which no action is associated. A client-side non-clickable area is contained in an tag:

This is a document presenting form fields as simple graphic areas, for example

any content that is not a sequence of characters that can be programmatically determined (opens in a new tab) or where the sequence is not expressing…

Content that does not take place in time, which can be viewed using svg and canvas elements; for example, an interactive animation created using a…

Text and image of text in normal size is less than 150% or 120% bold compared to the default size.

required for conformance: Note 1: One may conform in a variety of well-defined ways to this document. Note 2: Content identified as " informative…

Image embedded in or generated by an tag.

on the most common sized desktop/laptop display with the viewport (opens in a new tab) maximized

Only for layout purposes: use of HTML tags for a purpose other than that specified in the specifications (with regard to the declared document type).…

The content of the tag on a web page, enabling the content/nature of the page to be identified clearly, concisely and uniquely ("Site map…

One or more passages of text identified by id values which are unique in the page and associated with an element (form field, button, etc.) by the…

stopped by user request and not resumed until requested by user

continuous line forming the boundary of a shape not including shared pixels, or the minimum bounding box (opens in a new tab) , whichever is shortest.

Personal data concerning the user in a form can be

input from a device that can target a specific coordinate (or set of coordinates) on a screen, such as a mouse, pen, or touch contact

information that is not live (opens in a new tab)

rendering of the content (opens in a new tab) in a form to be perceived by users

Visual rendering of content via a browser in graphic mode. Presentation concerns the style, position and dimensions of HTML elements and their…

A table used to display information in cells without the need for a column or row header.

Corresponds to JavaScript event handlers considered as down events ( mousedown , touchstart for example).

six year time period that begins between the ages of five and seven, possibly without any previous education

Primary control functions are the basic functions of a media player: play, pause, stop, audio control.

series of user actions where each action is required in order to complete an activity

determined by software from author-supplied data provided in a way that different user agents (opens in a new tab) , including assistive technologies…

additional information that can be programmatically determined (opens in a new tab) from relationships (opens in a new tab) with a link, combined…

set by software using methods that are supported by user agents (opens in a new tab) , including assistive technologies (opens in a new tab)

serving only an aesthetic purpose, providing no information, and having no functionality

QVGA (Quarter Video Graphics Array) resolution is a display standard corresponding to a size of 320 pixels X 240 pixels (i.e. 76,800 pixels).

Indicates the reading direction of the document or a passage of text via the dir attribute, dir="ltr" , for example. The two recognised values are

event that a) occurs at the same time as the viewing and b) is not completely generated by the content

Real-time text (RTT) communication is a form of written communication which allows the other party to read the text being written by the sender,…

Process which consists of redirecting the user to another page, on the same domain or on a different domain, when displaying a page on the client…

A technique for modifying the content of one or more elements of a web page. The refresh process can be carried out by automatically reloading the…

perceivable, programmatically determined (opens in a new tab) section (opens in a new tab) of content

In a form, a set of fields which can be grouped together according to the nature of the information required. The purpose of grouping is to identify…

meaningful associations between distinct pieces of content

the relative brightness of any point in a colorspace, normalized to 0 for darkest black and 1 for lightest white

Relay services allow users, regardless of their mode of communication (text, sign, speech) to interact during real-time remote communication with…

Corresponds to JavaScript event handlers considered as up events ( mouseup , touchend for example).

the content would not conform (opens in a new tab) if that technology (opens in a new tab) is turned off or is not supported

In an office environment, the rendering order is determined by the order in which content is written. However, certain bad practices can disrupt the…

Mechanism generally based on CSS, allowing the user to replace text with image of text and vice versa on the principle of style switcher. The…

Method that allows the user to get a version of the document with sufficient contrast.

text or number by which software can identify the function of a component within Web content

same result when used: Example: A submit "search" button on one web page and a "find" button on another web page may both have a field to enter a…

same position relative to other items: Note: Items are considered to be in the same relative order even if other items are inserted or removed from…

the success criterion does not evaluate to 'false' when applied to the page

Code generally written in the form of a list of commands (e.g. JavaScript). Client-side interpreted languages require a compatible browser on which…

Area giving direct access (form) or indirect access (interface element giving access to the form) to the search engine which enables searches to be…

a self-contained portion of written content that deals with one or more related topics or thoughts

Web pages linked together to form a coherent set of web pages within a website. For example, the pages of a specific section, the pages of a blog or…

The conditions for rendering a text alternative using assistive technologies (e.g. a screen magnifier) require it to be as short as possible. A…

a language using combinations of movements of the hands and arms, facial expressions, or body positions to convey meaning

translation of one language, generally a spoken language, into a sign language (opens in a new tab)

an input modality that only targets a single point on the page/screen at a time – such as a mouse, single finger on a touch screen, or stylus.

Dedicated page presenting the tree structure of a website, generally in the form of lists of links organised into headings and sub-headings giving…

a sensory experience that is not purely decorative and does not primarily convey important information or perform a function

dynamic property expressing characteristics of a user interface component (opens in a new tab) that may change in response to user action or…

A status message informs the user of a content change on the page without interrupting their main activity (there is no change of context, for…

Source: WCAG 2.2 definition of “structure” (opens in a new tab) (W3C)

These are the formats and styles used to structure content (headings, lists, paragraphs, etc.). When these formats or styles are used to create…

property whose value determines the presentation (e.g. font, color, size, location, padding, volume, synthesized speech prosody) of content elements…

The CSS language for formatting content elements (examples: page background colour, font size/colour, positioning of information on the web page,…

Text whose formatting is controlled by a style sheet.

Subtitles are in a language other than the language of the video.

Alternation of relative luminance which can cause seizures in some people if they are large enough in a specific frequency range.

Alternating relative brightness that can cause seizures in some people, if they are large enough in a specific frequency range.

A summary (of table) is a passage of text associated with a complex data table. It provides information about the nature and structure of the table…

additional content (opens in a new tab) that illustrates or clarifies the primary content

A support service can be: the feedback mechanism identified in the website's accessibility statement, a help desk, a call centre, technical support,…

A support service can be: the feedback mechanism identified in the application's accessibility statement, a help desk, a call centre, a technical…

Link contained in a element. In the case of an SVG link (version 1.1), the "accessible name" is obtained as follows: Passage of text associated with…

Narration added (via a sound file) to an audio track to describe important visual details that cannot be understood from the main audio track alone.…

Text of audio information (a character's words, noise that is important for understanding the action, etc.) present in a time-based medium and…

audio (opens in a new tab) or video (opens in a new tab) synchronized with another format for presenting information and/or with time-based…

region of the display that will accept a pointer action, such as the interactive area of a user interface component (opens in a new tab)

mechanism (opens in a new tab) for encoding instructions to be rendered, played or executed by user agents (opens in a new tab)

A template is a document format with predefined parameters. It is used to insert content edited by the author. A template has presentation, usage and…

Graphic element used in a test, a CAPTCHA or a graphic element used as a test in a quiz or game. Example: a series of graphic elements presents a…

Image used in a test, captcha or image used as a test in a quiz or game.

sequence of characters that can be programmatically determined (opens in a new tab) , where the sequence is expressing something in human language…

Text associated with an image or complex shape that provides information equivalent to that conveyed by the image or complex shape.

"Accessible name" rendered by assistive technologies for graphic elements such as:

Graphic element displaying text. The use of graphic elements containing text is not recommended. Where it is possible to reproduce the same effects…

In HTML, link containing no child element of type

The video time stamp is the time value declared in the caption file.

Time-based media can be broadcast in real time or offered for playback asynchronously (pre-recorded media).

A toggle control is a control that can have 2 or 3 states, so the user-defined state is persisted to the next state. It can be a screen lock control…

Textual content associated with a time-based media object using the appropriate technique (text encoded in HTML or in a text file located on the same…

Process managed automatically by the editing tool. There are two types of transformation:

Two-way voice communication applications are applications that allow 2 or more people to speak simultaneously. Videoconferencing applications, which…

Two-way voice communication web applications are applications that allow 2 or more people to speak simultaneously. Videoconferencing web applications…

Understandable content is readable (the order of the elements is logical) and coherent (the reading sequence is consistent).

These are documents in which the structural elements (headings, lists, paragraphs, etc.) are absent.

platform event that occurs when the trigger stimulus of a pointer is released

words used in such a way that requires users to know exactly which definition to apply in order to understand the content correctly

any software that retrieves and presents web content for users

any continuous period of time where no user actions occur

A user interface component is an element with which the user can interact, for example a button, a link or an input. Some components can be more…

data that is intended to be accessed by users

the technology of moving or sequenced pictures or images

a time-based presentation that contains only video (opens in a new tab) (no audio (opens in a new tab) and no interaction)

Possibility for the user to control the viewing of time-based media by means of the keyboard and any pointing device, at least. The following points…

object in which the user agent (opens in a new tab) presents content

Content is visible when it is shown on the web page, either when the page loads or after an interface component is activated (e.g., displaying a…

Text displayed as a visible label on the screen within a button or link.

Text displayed as a visible text on the screen within a button or link.

the font, size, color, and background can be set

In a spoken communication system (e.g. telephony), functions can be made available, for example

a non-embedded resource obtained from a single URI using HTTP plus any other resources that are used in the rendering or intended to be rendered…

These are web pages (created in HTML and CSS) embedded in a mobile application. Web views can be entire application screens or just parts of screens…

Set of all web pages: Connected by web links; Belonging to the same domain name (e.g. design.numerique.gouv.fr); Which form a coherent whole from the…

Focus is the state returned by an element that receives attention following a user action. There are three ways in HTML to give focus to an element:

The source code must comply with the following rules in accordance with the document type declaration used in the page