HTML

https://w3c.github.io/html-reference/
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HTML is the standard markup language used to structure web pages and applications, defining elements...
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### HTML comment example

Source: https://w3c.github.io/html-reference/syntax.html

Shows a valid HTML comment. The comment must start with <!-- and end with -->, and the text must not start with '>' or '->', must not contain '--', and must not end with '-'.

```html
<!-- main content starts here -->
```

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### Example of a document with implied start and end tags

Source: https://w3c.github.io/html-reference/spec.html

A minimal HTML document that omits the start and end tags for html, head, and body elements, yet is still a complete, valid document. The DOM tree constructed from this example includes the implied html, head, and body elements.

```html
<!DOCTYPE html>
<title>A relatively minimal HTML document</title>
<p>Hello World!</p>
```

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### Decimal numeric character reference example

Source: https://w3c.github.io/html-reference/syntax.html

Use this example to represent the dagger character (†, U+2020 DAGGER) with a decimal numeric character reference. The reference consists of an ampersand, a hash, one or more base-ten digits that are a Unicode code point, and a semicolon.

```html
&#8224;
```

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### Named character reference example: &dagger;

Source: https://w3c.github.io/html-reference/syntax.html

Use this example to represent the dagger character (†, U+2020 DAGGER) with a named character reference. The reference must start with an ampersand, use the exact case from the HTML5 named character references list, and end with a semicolon.

```html
&dagger;
```

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### Legacy-tool-compatible doctype: <!doctype HTML system "about:legacy-compat">

Source: https://w3c.github.io/html-reference/syntax.html

A legacy-tool-compatible doctype consists of the case-insensitive string "<!DOCTYPE", one or more spaces, the case-insensitive string "HTML", one or more spaces, the case-insensitive string "SYSTEM", one or more spaces, a quote mark, the literal string "about:legacy-compat", a matching quote mark, optionally one or more spaces, and a ">" character. This example uses lowercase "doctype" and "system" and is conformant.

```html
<!doctype HTML system "about:legacy-compat">
```
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