that's what I learned

 this week I learned all about site folder,attributes & syntax of attributes,HTML vs. XHTML,doctypes,web standard, and Deprecated tags.
 HTML => is a language for describing web pages. It stands for Hyper Text Markup Language. It is not a programming language, it is a markup language. Uses markup tags to describe web pages.
 XHTML => is a family of XML markup languages that mirror or extend versions of the widely-used Hypertext Markup Language (HTML), the language in which web pages are written.