A coupling (or a coupler) is a mechanism for connecting rolling stock in a train. The design of the coupler is standard, and is almost as important as the track gauge, since flexibility and convenience are maximised if all rolling stock can be coupled together.
HyperText Markup Language, commonly referred to as HTML, is the standard markup language used to create . Along with CSS, and JavaScript, HTML is a cornerstone technology, used by most websites to create visually engaging webpages, user interfaces for web applications, and user interfaces for many mobile applications. can read HTML files and render them into visible or audible web pages. HTML describes the structure of a website along with cues for presentation, making it a markup language, rather than a..