Bugzilla – Bug 930
spec says conformance checkers should report lack of palpable content
Last modified: 2012-06-30 11:06:33 CEST
http://www.whatwg.org/specs/web-apps/current-work/multipage/elements.html#palpable-content-0 "As a general rule, elements whose content model allows any flow content or phrasing content should have at least one child node that is palpable content and that does not have the hidden attribute specified. "Conformance checkers are encouraged to provide a mechanism for authors to find elements that fail to fulfill this requirement, as an authoring aid."