Through using HTML structured documents can be made, for example, by organizing the content, indicating where to place paragraphs, headings, lists, numbering, etc. The language consists of tags and attributes to structure the content and instruct the browser how to present the web page. Tags are written using angle brackets and attributes are placed inside tags to provide the browser more detail about the tags. The tags are not displayed on the webpage, the information is solely for the browser to use and follow.
Web developers aim to use HTML mark up lightly to avoid having an unnecessary amount of tags that make the process more complex. The less HTML code the browsers have to remove (to find textual content), the more effective they will be at determining the purpose of the webpage.
Tim Burners-Lee wrote the software in 1990 and it was first released in 1993, by 1995 it was officially recognised as a standard to base future implementations and should be supported by browsers and other web software. Since then, 1996, the HTML specifications have been maintained by the World Wide Web Consortium, with added input from commercial software vendors.