HTML and CSS Reference
15 Like img element, may be placed in interactive category if the usemap attribute is set.
16 May be placed in phrasing content, if it contains only phrasing content.
This last group of elements are a small set that covers elements that are intended to be
interacted with, typically with a click, without additional scripting or other mechanisms
of creating interactivity. Three of the four elements in this group, details , summary ,
and command , are new, while menu has been redefined in HTML5 after being depre-
ciated in HTML 4.01. See Table 2-13 for the usual summary of these elements.