Struct Dfn 

pub struct Dfn;

The <dfn> element - defining instance of a term.

Purpose

The <dfn> element represents the defining instance of a term. The paragraph, description list group, or section that contains the <dfn> element should also contain the definition of the term.

Content Categories

• Flow Content
• Phrasing Content
• Palpable Content

Permitted Content Model

• Phrasing content (but must not contain another <dfn> element)

Common Use Cases

• Defining technical terms in glossaries
• First occurrence of a term being defined
• Introducing new terminology
• Academic or technical documentation

Key Attributes

• title: Full term being defined (if abbreviation is in content)
• Global attributes

Example

<p><dfn>HTML</dfn> (HyperText Markup Language) is the standard
markup language for web pages.</p>

<p>A <dfn id="def-widget">widget</dfn> is a small application
that provides specific functionality.</p>

<p><dfn><abbr title="Cascading Style Sheets">CSS</abbr></dfn>
is used for styling web pages.</p>

WHATWG Specification

• 4.5.8 The dfn element

Trait Implementations

impl HtmlElement for Dfn

const TAG: &'static str = "dfn"

The HTML tag name (e.g., “div”, “span”, “img”).

const VOID: bool = false

Whether this is a void element (self-closing, no children allowed).

impl<T: PhrasingContent> CanContain<T> for Dfn

impl CanContain<Text> for Dfn

impl FlowContent for Dfn

impl PalpableContent for Dfn

impl PhrasingContent for Dfn