Glossary

Searchable terminology from accessibility, web standards, and related fields.

6 results found in Semantic HTML.

HTML Table (Data Table, Web Table)
An HTML table is a structured element in web markup used to organize data into rows and columns. Tables are created using the table, tr (table row), th (table header), and td (table data) elements. Fo…
Heading hierarchy (Heading structure, Heading levels, Document outline)
The logical structure created by using HTML heading elements (h1 through h6) in a nested, hierarchical order to convey the organisation of content on a web page. A proper heading hierarchy starts with…
Page Landmarks (ARIA Landmarks, Landmark Regions, Landmark Roles)
Named regions of a web page that identify its high-level structure — for example banner, navigation, main, complementary, search, form, contentinfo — so that assistive technology can expose them as ju…
Role Attribute (ARIA Role, WAI Role)
An HTML attribute that defines the purpose or type of a user interface element, communicating its function to assistive technologies. Originally proposed as part of the XHTML namespace-based approach …
Tag Order (Source Order, DOM Order, Reading Order)
The sequential order in which HTML elements appear in the source code of a web page, which determines the order in which screen readers and other assistive technologies present content to users. When …
tabindex
An HTML attribute that controls whether an element can receive keyboard focus and its position in the tab order. A tabindex of 0 places an element in the natural tab order, a positive value sets a spe…