[css-flexbox-1] Be more precise about what we mean by specified size (now that we have terms we can link to in css-sizing).

Author: fantasai

css-flexbox-1/Overview.bs

@@ -2889,14 +2889,15 @@ Flex Item Intrinsic Size Contributions</h4>
 
 	The <strong>main-size <a>min-content contribution</a> of a <a>flex item</a></strong>
 	is the larger of its <em>outer</em> <a>min-content size</a>
-	and specified size (its 'width'/'height' as appropriate, if that is <a>definite</a>),
+	and outer <a>preferred size</a> (its 'width'/'height' as appropriate)
+	if that is not ''width/auto'',
 	clamped by its <a>flex base size</a> as a maximum (if it is not growable)
 	and/or as a minimum (if it is not shrinkable),
 	and then further clamped by its <a lt="min main size property">min</a>/<a>max main size properties</a>.
 
 	The <strong>main-size <a>max-content contribution</a> of a <a>flex item</a></strong>
 	is the larger of its <em>outer</em> <a>max-content size</a>
-	and specified size (its 'width'/'height' as appropriate, if that is <a>definite</a>),
+	and outer <a>preferred size</a> (its 'width'/'height' as appropriate)
 	clamped by its <a>flex base size</a> as a maximum (if it is not growable)
 	and/or as a minimum (if it is not shrinkable),
 	and then further clamped by its <a lt="min main size property">min</a>/<a>max main size properties</a>.
@@ -3470,12 +3471,23 @@ Changes since the 16 October 2017 CR</h3>
 
 		<li id="change-2017-flex-min-contribution">
 			Floored <a>flex item</a>’s <a>min-content contribution</a>
-			by their specified size ('width'/'height' as appropriate).
+			by their <a>preferred size</a>
 			(<a href="https://github.com/w3c/csswg-drafts/issues/2353">Issue 2353</a>)
+			and cleaned up associated wording to be more precise.
 			<blockquote>
-				The <strong>main-size <a>min-content contribution</a> of a <a>flex item</a></strong>
+				The main-size <a>min-content contribution</a> of a <a>flex item</a>
 				is the larger of its <em>outer</em> <a>min-content size</a>
-				<ins>and specified size (its 'width'/'height' as appropriate, if that is <a>definite</a>)</ins>,
+				<ins>and outer <a>preferred size</a> (its 'width'/'height' as appropriate)
+				if that is not ''width/auto''</ins>,
+				clamped by its <a>flex base size</a> as a maximum (if it is not growable)
+				and/or as a minimum (if it is not shrinkable),
+				and then further clamped by its <a lt="min main size property">min</a>/<a>max main size properties</a>.
+
+				The main-size <a>max-content contribution</a> of a <a>flex item</a>
+				is the larger of its <em>outer</em> <a>max-content size</a>
+				and <ins>outer</ins> <del>specified</del> <ins>preferred</ins> size
+				(its 'width'/'height' as appropriate<del>,</del><ins>)</ins>
+				if that is <del>definite</del><ins>not ''width/auto''</ins>,
 				clamped by its <a>flex base size</a> as a maximum (if it is not growable)
 				and/or as a minimum (if it is not shrinkable),
 				and then further clamped by its <a lt="min main size property">min</a>/<a>max main size properties</a>.