XML stands for Extensible Markup Language. You might not realise it but you are probably already using it…

RSS stands for Really Simple Syndication. This is a file format that uses XML that allow websites to publish information and for other websites or software applications to read it. RSS is a standard but has come to signify a number of other formats such as the Atom file format. RSS is usually referred to as a feed or web feed and is normally indicated by this icon: