In this video Prof. Patterson introduces the basics of XML syntax and shows how the nested tag structure creates a tree-like data structure. XML is the basis of languages like HMTL, RSS and XAML. Understanding how to write well-formed XML is a skill that will help future-proof you against new XML-based languages in the future.
This video is used in courses taught by Prof. Donald J Patterson (@djp3) at UC Irvine and Westmont College.