High Quality Content by WIKIPEDIA articles! Human Markup Language (also HumanML and, within the context of a HumanML document, huml) is an XML specification developed to contextually describe physical, kinesic, cultural, and social information about instances of human communication. Development by OASIS began in 2001, and HumanML committee members released a Human Markup Language Primary Base Specification 1.0 in late 2002.