[css-lists] Remove the position:marker value. We might revisit it later.

Author: tabatkins

css-lists-3/Overview.bs

@@ -542,127 +542,6 @@ Marker Positioning</h2>
 		It is an unreviewed rough draft that hasn't even been properly checked for Web-compatibility.
 		Feel free to send feedback, but DON'T USE THIS PART OF THE SPEC.</strong>
 
-<h3 id='position-marker'>
-The ''marker'' value for 'position'</h3>
-
-	This section introduces a new positioning scheme,
-	designed to model the way in which ''list-style-position:outside'' list markers were traditionally positioned in CSS 2.1.
-	Outside list markers now have their positioning defined	in terms of this new value.
-
-	The new positioning scheme defined in this section can be used on all elements,
-	not just ''::marker'' pseudo-elements.
-	For example, this can be used to position explicit elements serving as markers in a legal document,
-	so that the list item has a marker whose value is guaranteed to be correct regardless of whether the CSS is applied
-	(often a requirement in legal documents),
-	but which is positioned like a native CSS marker.
-
-	<pre class="propdef partial">
-	Name: position
-	New values: marker
-	Computed value: see prose, otherwise same as normal
-	</pre>
-
-	The <dfn value for=position>marker</dfn> value for 'position' depends on the element it is set on having a <a>list item</a> ancestor.
-	If the specified value of 'position' is ''position/marker''
-	and the element does not have a <a>list item</a> ancestor,
-	'position' must compute to ''position/relative'' on the element.
-	An element with ''position:marker'' counts as <a>absolutely positioned</a>.
-
-	To calculate the marker's position, we must first define a few terms:
-
-	<dl>
-		<dt><dfn>ancestor list item</dfn>
-		<dd>The <a>ancestor list item</a> is the marker's nearest list item ancestor element.
-
-		<dt><dfn>marker positioning reference element</dfn>
-		<dd>
-			If the <a>ancestor list item</a> has ''marker-side:list-item'',
-			the <a>marker positioning reference element</a> is the <a>ancestor list item</a>.
-
-			Otherwise, if the <a>ancestor list item</a> has ''marker-side:list-container'' and has a parent element,
-			the <a>marker positioning reference element</a> is that parent.
-
-			Otherwise, the <a>marker positioning reference element</a> is the <a>ancestor list item</a>.
-
-
-		<dt><dfn>list item positioning edge</dfn>
-		<dd>
-			The border edge of the <a>ancestor list item</a> corresponding to the "inline-start" edge of the <a>marker positioning reference element</a>.
-
-		<dt><dfn>marker positioning edge</dfn>
-		<dd>
-			The outer edge of the marker that's on the opposite side from the <a>list item positioning edge</a>.
-			For example, if the <a>list item positioning edge</a> ended up being the left border edge of the <a>ancestor list item</a>,
-			the <a>marker positioning edge</a> would be the right margin edge of the marker.
-	</dl>
-
-	The marker's position in the <a>ancestor list item</a>’s block axis
-	is calculated according to the <a href="https://www.w3.org/TR/CSS21/visuren.html#normal-flow">normal flow</a>.
-
-	The marker's position in the <a>ancestor list item's</a> inline axis must be set such that
-	the <a>marker positioning edge</a> is flush with the <a>list item positioning edge</a>.
-
-	Note: The purpose of this somewhat convoluted definition is to position the marker flush against its list item,
-	and then when "marker-side:list-container",
-	keep all the markers for a given list on the same side of their list items even in mixed-direction text,
-	so that authors can specify padding on only one side of the list container and still ensure their markers are visible.
-	And on top of all that,
-	do something reasonable in the face of potentially differing writing-modes
-	on the marker, list item, and container.
-
-	All elements or pseudo-elements with ''position:marker''
-	that share a common <a>ancestor list item</a>
-	are known as <dfn lt='associated marker'>markers associated with that list item</dfn>.
-
-	The 'top', 'right', 'bottom', and 'left' properties specify offsets
-	relative to the top, right, bottom, and left edges (respectively) of the element itself,
-	similar to how relative positioning works.
-
-	<div class='example'>
-		''position:marker'' can be used when the precise list marker is important for the content,
-		not a stylistic choice,
-		but the normal <em>appearance</em> of lists is still desired.
-		For example, this trimmed snippet of the US Code of Laws may be marked up as the following in HTML:
-
-		<pre highlight=html>
-			&lt;style>
-			ol { list-style: none; }
-			.marker { position: marker; }
-			&lt;/style>
-			&lt;ol>
-			  &lt;li>
-			    &lt;span class='marker'>(a)&lt;/span> Definitions.— For purposes of this section—
-			    &lt;ol>
-			      &lt;li>&lt;span class='marker'>(1)&lt;/span> the term “agency” means agency as...
-			      &lt;li>&lt;span class='marker'>(2)&lt;/span> the term “individual” means a citizen...
-			    &lt;/ol>
-			  &lt;li>
-			    &lt;span class='marker'>(b)&lt;/span> Conditions of Disclosure.— No agency shall disclose...
-			    &lt;ol>
-			      &lt;li>&lt;span class='marker'>(1)&lt;/span> to those officers and employees of the agency...
-			      &lt;li>&lt;span class='marker'>(2)&lt;/span> required under section 552 of this title;
-			    &lt;/ol>
-			&lt;/ol>
-		</pre>
-
-		The preceding document should render something like this:
-
-		<pre>
-			(a) Definitions.— For purposes of this section—
-			    (1) the term “agency” means agency as...
-			    (2) the term “individual” means a citizen...
-			(b) Conditions of Disclosure.— No agency shall disclose...
-			    (1) to those officers and employees of the agency...
-			    (2) required under section 552 of this title;
-		</pre>
-
-		Importantly, even if the stylesheet is unavailable,
-		the list markers will appear the same
-		(though they will be positioned slightly differently),
-		so other documents can refer to those list markers
-		and be confident that the reference will always be resolvable.
-	</div>
-
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