[css-position-3][css-display-3] Define absolutely positioned in css-position.

Author: fantasai

css-display-3/Overview.bs

@@ -1202,18 +1202,12 @@ Appendix A: Glossary</h2>
 		<dt><dfn>in-flow</dfn>
 		<dd>
 			A box is <a>out-of-flow</a> if it is floated (via 'float')
-			or absolutely-positioned (via 'position').
+			or [=absolutely positioned=] (via 'position').
 			A box is <a>in-flow</a> if it is not <a>out-of-flow</a>.
 
 			Note: some [=formatting contexts=] inhibit floating,
 			so that an element with ''float: left'' is not necessarily <a>out-of-flow</a>.
 
-		<dt><dfn lt="absolutely positioned | absolutely positioned element | absolutely positioned box">absolutely positioned</dfn>
-		<dd>
-			A box is <a>absolutely positioned</a>
-			if its 'position' property is either ''position/absolute'' or ''position/fixed''.
-			Absolutely positioned boxes are also <a>out-of-flow</a>.
-
 		<dt><dfn>document order</dfn>
 		<dd>
 			The order in which boxes or content occurs in the document

css-position-3/Overview.bs

@@ -221,7 +221,7 @@ Choosing A Positioning Scheme: 'position' property</h2>
 		and does not affect the size or position of any other box,
 		except insofar as it increases the [=scrollable overflow area=] of its ancestors.
 		This [=positioning scheme=] is called
-		<dfn export dfn lt="relative position|relatively position|relatively-positioned|sticky-positioned box" local-lt="relative|relatively">relative positioning</dfn>.
+		<dfn export dfn lt="relative position | relatively position | relatively-positioned | relatively positioned box" local-lt="relative|relatively">relative positioning</dfn>.
 
 	<dt><dfn>sticky</dfn>
 	<dd>
@@ -233,7 +233,7 @@ Choosing A Positioning Scheme: 'position' property</h2>
 		to try to keep the box in view within its [=containing block=]
 		as the user scrolls.
 		This [=positioning scheme=] is called
-		<dfn export dfn lt="sticky position|sticky-positioned" local-lt="sticky">sticky positioning</dfn>.
+		<dfn export dfn lt="sticky position | sticky-positioned | sticky-positioned box" local-lt="sticky">sticky positioning</dfn>.
 
 	<dt><dfn>absolute</dfn>
 	<dd>
@@ -250,7 +250,7 @@ Choosing A Positioning Scheme: 'position' property</h2>
 		and is included in the [=scrollable overflow area=]
 		of the box that generates is [=containing block=].
 		This [=positioning scheme=] is called
-		<dfn export dfn lt="absolute position|absolutely position|absolutely-positioned|absolutely positioned box" local-lt="absolute|absolutely">absolute positioning</dfn>.
+		<dfn export dfn lt="absolute position | absolutely position | absolutely-positioned | absolutely positioned box | absolutely positioned element" local-lt="absolute|absolutely">absolute positioning</dfn>.
 
 	<dt><dfn>fixed</dfn>
 	<dd>
@@ -261,7 +261,7 @@ Choosing A Positioning Scheme: 'position' property</h2>
 		it does not move when the document is scrolled,
 		and is replicated on every page when it is paginated.
 		This [=positioning scheme=] is called
-		<dfn export dfn lt="fixed position|fixed-positioned|fixed-positioned box" local-lt="fixed">fixed positioning</dfn>
+		<dfn export dfn lt="fixed position | fixed-positioned | fixed-positioned box" local-lt="fixed">fixed positioning</dfn>
 		and is considered a subset of [=absolute positioning=].
 
 		<div class="example">