Struct Sup 

pub struct Sup;

The <sup> element - superscript.

Purpose

The <sup> element represents superscript text, which appears half a character above the normal line and is often rendered in a smaller font. Used for exponents, ordinal indicators, and footnote markers.

Content Categories

• Flow Content
• Phrasing Content
• Palpable Content

Permitted Content Model

• Phrasing content

Common Use Cases

• Mathematical exponents (x², 10³)
• Ordinal indicators (1st, 2nd, 3rd)
• Footnote or reference markers
• Trademark symbols (™, ®)

Key Attributes

• Global attributes only

Example

<p>Einstein's equation: E = mc<sup>2</sup></p>
<p>Area of a square: side<sup>2</sup></p>
<p>On the 21<sup>st</sup> of March...</p>
<p>Copyright<sup>&copy;</sup> 2024</p>

WHATWG Specification

• 4.5.20 The sup element

Trait Implementations

impl HtmlElement for Sup

const TAG: &'static str = "sup"

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 Sup

impl CanContain<Text> for Sup

impl FlowContent for Sup

impl PalpableContent for Sup

impl PhrasingContent for Sup