HTML wasn't an application of SGML: its syntax was clearly influenced by SGML, but it wasn't actually SGML. It didn't become an SGML application until a few peo

HTML wasn't an application of SGML: its syntax was clearly influenced by SGML, but it wasn't actually SGML. It didn't become an SGML application until a few people convinced the working group to make it so for HTML 2.0 (there was no HTML 1.0 standard: the earlier drafts I'm aware of defined how to construct an SGML document from an HTML one and explicitly stated it was not expected an SGML parser would be used, which I'd take to imply that HTML was not an SGML application).