[css-display] Add some dfns.

Author: tabatkins

css-display/Overview.bs

@@ -153,13 +153,13 @@ Interacting with the layout mode: the 'display-outside' property</h3>
 
 		<dt><dfn>table-row-group</dfn>, <dfn>table-header-group</dfn>, <dfn>table-footer-group</dfn>, <dfn>table-row</dfn>, <dfn>table-cell</dfn>, <dfn>table-column-group</dfn>, <dfn>table-column</dfn>, <dfn>table-caption</dfn>
 		<dd>
-			The element is an internal table element,
+			The element is an <dfn>internal table element</dfn>,
 			and participates in a table layout context. [[!CSS21]]
 			These values are all <a>layout-specific display roles</a>.
 
 		<dt><dfn>ruby-base</dfn>, <dfn>ruby-text</dfn>, <dfn>ruby-base-container</dfn>, <dfn>ruby-text-container</dfn>
 		<dd>
-			The element is an internal ruby element,
+			The element is an <dfn>internal ruby element</dfn>,
 			and participates in a ruby layout context. [[!CSS3RUBY]]
 			These values are all <a>layout-specific display roles</a>.
 	</dl>

css-display/Overview.html

@@ -258,13 +258,13 @@ <h3 class="heading settled heading" data-level=2.2 id=the-display-outside><span
 
 		<dt><dfn class=css-code data-dfn-for=display-outside data-dfn-type=value data-export="" id=valuedef-table-row-group>table-row-group<a class=self-link href=#valuedef-table-row-group></a></dfn>, <dfn class=css-code data-dfn-for=display-outside data-dfn-type=value data-export="" id=valuedef-table-header-group>table-header-group<a class=self-link href=#valuedef-table-header-group></a></dfn>, <dfn class=css-code data-dfn-for=display-outside data-dfn-type=value data-export="" id=valuedef-table-footer-group>table-footer-group<a class=self-link href=#valuedef-table-footer-group></a></dfn>, <dfn class=css-code data-dfn-for=display-outside data-dfn-type=value data-export="" id=valuedef-table-row>table-row<a class=self-link href=#valuedef-table-row></a></dfn>, <dfn class=css-code data-dfn-for=display-outside data-dfn-type=value data-export="" id=valuedef-table-cell0>table-cell<a class=self-link href=#valuedef-table-cell0></a></dfn>, <dfn class=css-code data-dfn-for=display-outside data-dfn-type=value data-export="" id=valuedef-table-column-group>table-column-group<a class=self-link href=#valuedef-table-column-group></a></dfn>, <dfn class=css-code data-dfn-for=display-outside data-dfn-type=value data-export="" id=valuedef-table-column>table-column<a class=self-link href=#valuedef-table-column></a></dfn>, <dfn class=css-code data-dfn-for=display-outside data-dfn-type=value data-export="" id=valuedef-table-caption0>table-caption<a class=self-link href=#valuedef-table-caption0></a></dfn>
 		<dd>
-			The element is an internal table element,
+			The element is an <dfn class=css-code data-dfn-for=display-outside data-dfn-type=value data-export="" id=valuedef-internal-table-element>internal table element<a class=self-link href=#valuedef-internal-table-element></a></dfn>,
 			and participates in a table layout context. <a data-biblio-type=normative data-link-type=biblio href=#css21 title=css21>[CSS21]</a>
 			These values are all <a data-link-type=dfn href=#layout-specific-display-role title="layout-specific display roles">layout-specific display roles</a>.
 
 		<dt><dfn class=css-code data-dfn-for=display-outside data-dfn-type=value data-export="" id=valuedef-ruby-base>ruby-base<a class=self-link href=#valuedef-ruby-base></a></dfn>, <dfn class=css-code data-dfn-for=display-outside data-dfn-type=value data-export="" id=valuedef-ruby-text>ruby-text<a class=self-link href=#valuedef-ruby-text></a></dfn>, <dfn class=css-code data-dfn-for=display-outside data-dfn-type=value data-export="" id=valuedef-ruby-base-container>ruby-base-container<a class=self-link href=#valuedef-ruby-base-container></a></dfn>, <dfn class=css-code data-dfn-for=display-outside data-dfn-type=value data-export="" id=valuedef-ruby-text-container>ruby-text-container<a class=self-link href=#valuedef-ruby-text-container></a></dfn>
 		<dd>
-			The element is an internal ruby element,
+			The element is an <dfn class=css-code data-dfn-for=display-outside data-dfn-type=value data-export="" id=valuedef-internal-ruby-element>internal ruby element<a class=self-link href=#valuedef-internal-ruby-element></a></dfn>,
 			and participates in a ruby layout context. <a data-biblio-type=normative data-link-type=biblio href=#css3ruby title=css3ruby>[CSS3RUBY]</a>
 			These values are all <a data-link-type=dfn href=#layout-specific-display-role title="layout-specific display roles">layout-specific display roles</a>.
 	</dl>
@@ -571,6 +571,8 @@ <h2 class="no-num no-ref heading settled heading" id=index><span class=content>
 <li>inline-level, <a href=#valuedef-inline-level title="section 2.2">2.2</a>
 <li>inline-list-item, <a href=#valuedef-inline-list-item title="section 2.4">2.4</a>
 <li>inline-table, <a href=#valuedef-inline-table title="section 2.4">2.4</a>
+<li>internal ruby element, <a href=#valuedef-internal-ruby-element title="section 2.2">2.2</a>
+<li>internal table element, <a href=#valuedef-internal-table-element title="section 2.2">2.2</a>
 <li>layout-specific display role, <a href=#layout-specific-display-role title="section 2.2">2.2</a>
 <li>list-item<ul><li>value for display-extras, <a href=#valuedef-list-item0 title="section 2.3">2.3</a>
 <li>value for display, <a href=#valuedef-list-item title="section 2.4">2.4</a>