[css-overflow-3] Update Abstract, Status, and Changes sections

Author: frivoal

css-overflow-3/Overview.bs

@@ -14,17 +14,30 @@ Editor: L. David Baron, Mozilla https://www.mozilla.org/, https://dbaron.org/, w
 Editor: Elika J. Etemad / fantasai, Invited Expert, http://fantasai.inkedblade.net/contact, w3cid 35400
 Editor: Florian Rivoal, On behalf of Bloomberg, http://florian.rivoal.net/, w3cid 43241
 Abstract: This module contains the features of CSS relating to scrollable overflow handling in visual media.
-!Change Log: <a href="https://hg.csswg.org/drafts/log/tip/css-overflow/Overview.bs">from 27 January 2015 to the present</a>
-!Change Log: <a href="https://hg.csswg.org/drafts/log/tip/css-overflow/Overview.src.html">from 28 March 2013 to 27 January 2015</a>
-!Change Log: <a href="https://hg.csswg.org/drafts/log/tip/css3-overflow/Overview.src.html">from 31 July 2012 to 27 March 2013</a>
+   This level is focused on completing a precise specification for the existing overflow features,
+   including the 'overflow' property and its longhands;
+   'line-clamp', its longhands, and its legacy pre-standard syntax;
+   and the 'text-overflow' property.
+   A few additional features introduced in support of [[CSS-CONTAIN-1]] and [[CSS-CONTAIN-2]] are also defined:
+   ''overflow: clip'' and the 'overflow-clip-margin' property.
 Ignored Vars: B, P
 Ignored Terms: padding edge, viewport, line box, flex order, -webkit-box-orient
 At Risk: the 'max-lines' property
-Status Text: <strong>This update trims away most of the experimental new ideas
-   for handling overflow that were described in the <a href="https://www.w3.org/TR/2013/WD-css-overflow-3-20130418/">previous Working Draft</a>.
-   These ideas are not abandoned; they are merely <a href="https://drafts.csswg.org/css-overflow/">deferred until Level 4</a>.</strong>
-   Level 3 is focused solely on completing a spec for the existing, shipped 'overflow' features;
-   work will resume on fragmented overflow and other fun things once this is completed.
+Status Text:
+   The desciption of 'overflow' and its longhands is considered
+   significantly more complete and correct than previous working drafs
+   or than [[CSS2]],
+   but a few questions and issues remain open.
+   ''overflow: clip' and 'overflow-clip-margin' are rather new,
+   and lack implementation experience.
+   'text-overflow' is stable,
+   is unchanged form its earlier definition in [[CSS-UI-3]].
+   While not yet fully validated by implementation experience,
+   the design of 'line-clamp' and its longhands is considered roughly complete.
+   Earlier versions of this specification included experimental new ideas
+   for handling overflow by creating new boxes using fragmentation.
+   These ideas are not abandoned; they are merely <a href="https://drafts.csswg.org/css-overflow-4/">deferred until Level 4</a>.
+   Work will resume on fragmented overflow once this level stabilizes completed.
 </pre>
 <!-- FIXME: Regressions from bikeshed conversion: -->
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@@ -1315,11 +1328,47 @@ Once it is sufficiently stable in this specification,
 	</div>
 
 
-Privacy and Security Considerations {#priv-sec}
+<h2 class="no-num non-normative" id="priv-sec">Appendex A. Privacy and Security Considerations</h2>
 ===============================================
 
 This specification introduces no new privacy or security concerns.
 
+<h2 class="no-num non-normative" id="changes">Appendix B. Changes</h2>
+
+This appendix is <em>informative</em>.
+
+<h3 id="changes-since-2018-07-31">
+Changes from the <a href="https://www.w3.org/TR/2018/WD-css-overflow-3-20180731/">2018-07-31 Working Draft</a>
+</h3>
+
+* Fixed markup errors and typos
+* Made various editorial clarifications and fixed inconsistencies
+* Renamed <code>block-overflow</code> to 'block-ellipsis'
+* Define 'text-overflow' to affect an overflowing [=block overflow ellipsis=]
+* Define the behavior of a [=block overflow ellipsis=] that is longer than the line
+* Define interaction of 'block-ellipsis' and ''::first-line'' / ''::first-letter''
+* Adjust the intrinsic size of elements with ''continue: discard''
+* Define how to layout the [=block overflow ellipsis=]
+* Define the legacy behavior of '-webkit-line-clamp' for compatibility with existing content
+* Define that end padding is included in the scrollable overflow area except for block containers
+    (which are more tricky to handle, due to web-compat issues)
+* Define that Margins of flex and grid items are included in scrollable overflow
+* Do not propagate overflow from boxless elements
+* Rename 'scrollable overflow region' to 'scrollable overflow area'
+* Introduce the 'overflow-clip-margin' property
+
+<h3 id="old-changes">
+Changes Prior to the <a href="https://www.w3.org/TR/2018/WD-css-overflow-3-20180731/">2018-07-31 Working Draft</a>
+</h3>
+
+Changes predating the publication of the <a href="https://www.w3.org/TR/2018/WD-css-overflow-3-20180731/">2018-07-31 Working Draft</a>
+can be found in the following change logs:
+
+* <a href="https://github.com/w3c/csswg-drafts/commits/master?path=css-overflow-3&until=2018-07-31">from 2017-08-02 to 2018-07-31</a>
+* <a href="https://hg.csswg.org/drafts/log/tip/css-overflow/Overview.bs">from 2015-01-27 to 2017-08-01</a>
+* <a href="https://hg.csswg.org/drafts/log/tip/css-overflow/Overview.src.html">from 2013-03-28 to 2015-01-27</a>
+* <a href="https://hg.csswg.org/drafts/log/tip/css3-overflow/Overview.src.html">from 2012-07-31 to 2013-03-27</a>
+
 <h2 class=no-num id="acknowledgments">
 Acknowledgments</h2>