Term: HTML, Description: Hypertext Markup Language, Question: Was HTML based on another programming language?, Answer:Yes
Fact1: HTML was based on an existing markup language - SGML.  Fact2: SGML became an ISO standard in 1986, though its own origins go further back than that. Fact3: HTML was a subset of SGML; you could encapsulate an HTML document inside a SGML document. 