With the advent of HTML5, many old elements were deprecated. To ensure the best user experience, deprecated elements should not be used. This rule checks for the following deprecated elements:


||Element||Remediation Action||

|``++basefont++``, ``++big++``, ``++blink++``, ``++center++``, ``++font++``, ``++marquee++``, ``++multicol++``, ``++nobr++``, ``++spacer++``, ``++tt++``|use CSS|

|``++acronym++``|use ``++abbr++``|

|``++applet++``|use ``++embed++`` or ``++object++``|

|``++bgsound++``|use ``++audio++``|

|``++frame++``, ``++frameset++``, ``++noframes++``|restructure the page to remove frames|

|``++isindex++``|use form controls|

|``++dir++``|use ``++ul++``|

|``++hgroup++``|use ``++header++`` or ``++div++``|

|``++listing++``|use ``++pre++`` and ``++code++``|

|``++nextid++``|use GUIDS|

|``++noembed++``|use ``++object++`` instead of ``++embed++`` when fallback is necessary|

|``++plaintext++``|use the "text/plain" MIME type|

|``++strike++``|use ``++del++`` or ``++s++``|

|``++xmp++``|use ``++pre++`` or ``++code++``, and escape "<" and "&" characters|


== See

* W3C, http://www.w3.org/TR/html5-diff[Obsolete Features]
* WHATWG, http://www.whatwg.org/specs/web-apps/current-work/multipage/obsolete.html[Obsolete Features]

