[css-2018] List exceptions cleared for shipping

Closes w3c#2388

Author: frivoal

css-2018/Overview.bs

@@ -525,19 +525,11 @@ Experimentation and Unstable Features</h4>
 	In exceptional cases,
 	the CSSWG may additionally, by an officially-recorded resolution,
 	add pre-CR features to the set that are considered safe to release for broad use.
+	See [[#CR-exceptions]].
 
 	Note: Vendors should consult the WG explicitly and not make assumptions on this point,
 	as a pre-CR spec that hasn't changed in awhile is usually more out-of-date than stable.
 
-	The current list of pre-CR features approved for wide release consists of:
-	<ul>
-		<li>CSS Animations [[!CSS3-ANIMATIONS]]
-		<li>CSS Transitions [[!CSS3-TRANSITIONS]]
-		<li>CSS Transforms [[!CSS3-TRANSFORMS]]
-		<li>The ''min-content'', ''max-content'', and ''fit-content'' keywords from [[!CSS-SIZING-3]]
-		<li>The '':dir()'' and '':lang()'' selectors from [[!SELECTORS4]]
-	</ul>
-
 <h4 id="proprietary">
 Proprietary and Non-standardized Features</h4>
 
@@ -675,6 +667,40 @@ Preserving the Openness of CSS</h5>
 	<a href="http://lists.w3.org/Archives/Public/public-css-testsuite">public-css-testsuite@w3.org</a>
 	mailing list.
 
+<h2 id="CR-exceptions">
+Safe to Release pre-CR Exceptions</h2>
+
+       The following features have been explicitly and proactively cleared
+       by the CSS Working Group for broad release
+       prior to the spec reaching Candidate Recommendation:
+       <ul>
+               <li>The flow-relative equivalents of
+               the sizing properties ('width', 'height', etc.),
+               the border properties,
+               the margin and padding properties.
+               See <a href="https://lists.w3.org/Archives/Public/www-style/2015Jul/0040.html">explanation</a>
+               and <a href="https://www.w3.org/TR/css-logical-1/">specification</a>.
+
+               <li>The ''min-content'' and ''max-content'' keywords of the sizing properties.
+               See <a href="https://lists.w3.org/Archives/Public/www-style/2015Aug/0109.html">decision</a>
+               and <a href="https://www.w3.org/TR/css-sizing-3/#sizing-values">specification</a>.
+	       <li>The ''conic-gradient()'' gradient notation. See <a href="https://github.com/w3c/csswg-drafts/issues/2383#issuecomment-371340088">decision</a>.
+       </ul>
+
+       The following features have been explicitly and retroactively cleared
+       by the CSS Working Group for broad release
+       prior to the spec reaching Candidate Recommendation:
+       <ul>
+               <li>Everything in
+               <a href="https://www.w3.org/TR/css-animations-1/">CSS Animations Level 1</a>,
+               <a href="https://www.w3.org/TR/css-transitions-1/">CSS Transitions Level 1</a>,
+               and
+               <a href="https://www.w3.org/TR/css-transforms-1/">CSS Transforms Level 1</a>.
+	       <li>The '':dir()'', '':lang()'', and '':focus-within'' pseudo-classes from [[SELECTORS-4]].
+	       <li>The ''min-content'' and ''max-content'' keywords from [[CSS-SIZING-3]].
+       </ul>
+
+
 <h2 id="indices">Indices</h2>
 
 <em>These sections are non-normative.</em>