Deprecated Elements (to avoid using)
The following elements listed are all deprecated, meaning that they
have been removed in later revisions of standards. Their use should now be
avoided, but in most cases these elements are still well supported. Note
xmp, were removed
between HTML3.2 and HTML4 and are classed as ‘obsolete’ (they do not show
as ‘deprecated in HTML4.01’, they are simply not shown).