[1] em 要素型は、 強調 (emphasis) を表します。

[6] 仕様書:

• HTML 4
  • IW:HTML4:"struct/text.html#edef-EM"

[2]

開始タグ

必須

終了タグ

必須

内容模型

(%inline;)*

出現できる文脈

%inline な文脈

属性

属性名	属性値	既定値	説明	出典
class		(なし)	級	[HTML 4] %coreattrs ⊂ %attrs, [XHTML 1] Core ⊂ Common
dir			書字方向	[HTML 4] %i18n ⊂ %attrs, [XHTML 1] I18N ⊂ Common
id	ID	(なし)	一意識別子	[HTML 4] %coreattrs ⊂ %attrs, [XHTML 1] Core ⊂ Common
lang			自然言語	[HTML 4] %i18n ⊂ %attrs
xml:lang			自然言語	[XHTML 1] I18N ⊂ Common
onclick	%Script	(なし)		[HTML 4] %events ⊂ %attrs, [XHTML 1] Events ⊂ Common
ondblclick	%Script	(なし)		[HTML 4] %events ⊂ %attrs, [XHTML 1] Events ⊂ Common
onkeydown	%Script	(なし)		[HTML 4] %events ⊂ %attrs, [XHTML 1] Events ⊂ Common
onkeypress	%Script	(なし)		[HTML 4] %events ⊂ %attrs, [XHTML 1] Events ⊂ Common
onkeyup	%Script	(なし)		[HTML 4] %events ⊂ %attrs, [XHTML 1] Events ⊂ Common
onmousedown	%Script	(なし)		[HTML 4] %events ⊂ %attrs, [XHTML 1] Events ⊂ Common
onmousemove	%Script	(なし)		[HTML 4] %events ⊂ %attrs, [XHTML 1] Events ⊂ Common
onmouseout	%Script	(なし)		[HTML 4] %events ⊂ %attrs, [XHTML 1] Events ⊂ Common
onmouseover	%Script	(なし)		[HTML 4] %events ⊂ %attrs, [XHTML 1] Events ⊂ Common
onmouseup	%Script	(なし)		[HTML 4] %events ⊂ %attrs, [XHTML 1] Events ⊂ Common
style			スタイル情報	[HTML 4] %coreattrs ⊂ %attrs, [XHTML 1] Style ⊂ Common
title			注釈的題	[HTML 4] %coreattrs ⊂ %attrs, [XHTML 1] Core ⊂ Common

<p><em><strong>Note.</strong>
To reflect errata and subsequent developments, such as XML Schemas,
work on <a href="../TR/2004/WD-xhtml-modularization-20040218/">Second
Edition of "Modularization of XHTML"</a> is currently in progress.</em></p>