#HTML is a #ProgrammingLanguage. Just because it's a #Markup & directly #interpreted languague doesn't make it less valid!
I'd go so far as to say that #Markdown and #BBcode also qualify as sub- and supersets of #HTML just like #Sass for #JavaScript.
- For a #Programming #Languague it's irrelevant if they need a compiler and/or interpreter as the reason to use them is to have a #HumanReadable & -editable codebase and not some #Apple1-Style "shoving binary data to a certain adress and hit run" kinda situation.
Even #COBOL on #PunchCards is #ProgrammingCode!