The <data> tag provides both a machine-readable value for data processing via scripting, and a human-readable value for rendering in a browser. The <data> tag contains the attribute value which contains the information that is to be processed by scripting.
The <datalist> tag specifies a list of pre-defined options for an <input> tag. Users will see a drop-down list of options as they input data.
The <dd> tag is the definition description of the related <dt> tag (definition term) within a <dl> tag (definition list).
Definition lists use the <dl> tag and the list items (definition terms) within use the <dt> tag. The <dd> tag is the definition description of the related term.
The <dfn> tag is a “definition element” and specifies a term that is going to be defined within the immediate content.
The <dt> tag (definition term) lives with the <dl> tag (definition list) and uses the <dd> tag (definition description) to define the meaning of the listed term.
The <del&rt; tag defines text that has been deleted from a document. By default, browsers will usually put a line through deleted text.
The <details> tag specifies additional information that the user can open and close on demand. The area is closed by default, but expands to display the content within.
The <dialog> tag defines a box or small window often used to create popup dialogs and modals on a web page.
The <em> tag is used for emphasized text that is typically displayed in the browser as italic and should be pronounced with an emphasis, using verbal stress.
Headings in HTML come in the form of <h1>, <h2>, <h3>, <h4>, <h5>, and <h6> tags. They are used to break up the text on your page into chunks for easier reading.
The <ins> tag defines text that has been inserted into a document after the initial posting. Browsers will sometimes underline inserted text.
The <i> tag defines text in an alternate voice or mood, and is typically displayed in italics by the browser. There is no extra emphasis to the text.
The <kbd> tag represents a span of inline text denoting textual user input from a keyboard, voice input, or any other text entry device.
The <li> tag defines a list item used inside ordered lists (<ol>) and unordered lists (<ul>).
The <mark> tag defines text that should be marked or highlighted for reference purposes or for its relevance in some context.
The <marquee> tag is used for scrolling a line of text or an image either horizontally across or vertically down your web page.
The <noscript> tag is used to provide browsers, which cannot display scripts, with alternative content to display on the page. The <noscript> is usually placed directly after the intended <script>.
The <ol> tag defines an ordered list which can be numerical or alphabetical.
The <p> tag defines text inside a paragraph. Each paragraph of text should be contained in a set of <p> tags. Browsers will add space below each paragraph.
