Hyper Text Markup Language – HTML

HTML stands for Hyper Text Markup Language. HTML is the standard markup language for creating Web pages.

It is a fundamental technology for building websites and web applications.

HTML is a markup language, not a programming language.

HTML documents consist of a set of elements or tags that structure the content and describe how it should be displayed in web browsers.

HTML provides a means to create structured documents by denoting structural semantics for text such as headings, paragraphs, lists, links, quotes, and other items.

HTML elements are delineated by tags, written using angle brackets. It uses tags to mark or structure content on a web page. These tags are enclosed in angle brackets, such as <tagname>

HTML documents must start with a document type declaration: <! DOCTYPE html> 

HTML document itself begins with <html> and ends with </html>

The visible part of the HTML document is between <body> and </body>

The first tag in such a pair is the start tag, and the second is the end tag (they are also called opening tags and closing tags)

Markup

HTML markup consists of several key components, including those called tags (and their attributes), character-based data typescharacter references and entity references.

The following is an example of the classic “Hello, World!” program:

<html>
<head>
<title>Payilagam</title>
</head>
<body>
<div>
<p>This is Software Training Institute</p>
</div>
</body>
</html>

* The text between <html> and </html> describes the web page.
* The text between <body> and </body> is the visible page content.
* The markup text <title>Payilagam</title> defines the browser page title shown on browser tabs

<div> defines a division of the page used for easy styling.  
*<head> and </head>, a <meta> element can be used to define webpage metadata.

courtesy: https://chat.openai.com/
https://en.wikipedia.org/wiki/HTML