Export terms 'list box' and 'drop-down box' for <select>

These terms are needed for specifying the 'appearance' property.

source

@@ -114006,28 +114006,32 @@ details[open] > summary {
 
   <h4>The <code>select</code> element</h4>
 
+  <p>A <code>select</code> element is either a <dfn data-export="" data-dfn-for="select">list
+  box</dfn> or a <dfn data-export="" data-dfn-for="select">drop-down box</dfn>, depending on its
+  attributes.</p>
+
   <p>A <code>select</code> element whose <code data-x="attr-select-multiple">multiple</code>
-  attribute is present is expected to render as a multi-select list box.</p>
+  attribute is present is expected to render as a multi-select <span>list box</span>.</p>
 
   <p>A <code>select</code> element whose <code data-x="attr-select-multiple">multiple</code>
   attribute is absent, and whose <span data-x="concept-select-size">display size</span> is greater
-  than 1, is expected to render as a single-select list box.</p>
+  than 1, is expected to render as a single-select <span>list box</span>.</p>
 
-  <p>When the element renders as a list box, it is expected to render as an
+  <p>When the element renders as a <span>list box</span>, it is expected to render as an
   <span>'inline-block'</span> box whose <span>'height'</span> is the height necessary to contain as
   many rows for items as given by the element's <span data-x="concept-select-size">display
   size</span>, or four rows if the attribute is absent, and whose <span>'width'</span> is the
   <span>width of the <code>select</code>'s labels</span> plus the width of a scrollbar.</p>
 
   <p>A <code>select</code> element whose <code data-x="attr-select-multiple">multiple</code>
   attribute is absent, and whose <span data-x="concept-select-size">display size</span> is 1, is
-  expected to render as a one-line drop down box whose width is the <span>width of the
+  expected to render as a one-line <span>drop-down box</span> whose width is the <span>width of the
   <code>select</code>'s labels</span>.</p>
 
-  <p>In either case (list box or drop-down box), the element's items are expected to be the
-  element's <span data-x="concept-select-option-list">list of options</span>, with the element's
-  <code>optgroup</code> element <span data-x="concept-tree-child">children</span> providing headers
-  for groups of options where applicable.</p>
+  <p>In either case (<span>list box</span> or <span>drop-down box</span>), the element's items are
+  expected to be the element's <span data-x="concept-select-option-list">list of options</span>,
+  with the element's <code>optgroup</code> element <span data-x="concept-tree-child">children</span>
+  providing headers for groups of options where applicable.</p>
 
   <p>An <code>optgroup</code> element is expected to be rendered by displaying the element's <code
   data-x="attr-optgroup-label">label</code> attribute.</p>