0
The general family is HTML, which stands for Hyper Text Markup Language
but insie this you can have XHTML, SMIL, MathML, etc which is almost the same as HtML but has few more rules or differences
Svett smil was created in 1990.
David V. Smil has written:
'Boron tethered radical cyclizations'
(1) XHTML 1.0 Strict
(2) XHTML 1.0 Transitional
(3) XHTML 1.0 Frameset
HTML is in XHTML, some argue that XHTML is it's own markup