[css-values-3] Bikeshed fixes

Author: frivoal

css-values-3/Overview.bs

@@ -22,7 +22,7 @@ Editor: fantasai, http://fantasai.inkedblade.net/contact, w3cid 35400
 Former Editor: Håkon Wium Lie, Opera Software, howcome@opera.com
 Abstract: This CSS module describes the common values and units that CSS properties accept and the syntax used for describing them in CSS property definitions.
 At Risk: ''attr()''
-Ignored Terms: <spacing-limit>, containing block
+Ignored Terms: <spacing-limit>, containing block, pairing, property
 Ignored Vars: Cn+1, n
 Inline Github Issues: yes
 </pre>
@@ -509,7 +509,7 @@ Resource Locators: the <<url>> type</h3>
 
 	The <dfn>url()</dfn> <a>functional notation</a>,
 	denoted by <<url>>,
-	represents a <dfn>URL</dfn>,
+	represents a <dfn noexport>URL</dfn>,
 	which is a pointer to a resource.
 	The typical syntax of a <<url>> is:
 
@@ -1063,11 +1063,11 @@ Viewport-percentage lengths: the ''vw'', ''vh'', ''vmin'', ''vmax'' units</h4>
 Absolute lengths: the ''cm'', ''mm'', ''Q'', ''in'', ''pt'', ''pc'', ''px'' units</h3>
 
 	The <dfn lt="absolute length">absolute length units</dfn> are fixed in relation to each other
-	and anchored to some physical measurement.
+	and [=anchored=] to some physical measurement.
 	They are mainly useful when the output environment is known.
 	The absolute units consist of
 	the <dfn>physical units</dfn> (''in'', ''cm'', ''mm'', ''pt'', ''pc'', ''Q'')
-	and the <dfn>visual angle unit</dfn> (''px''):
+	and the <dfn export>visual angle unit</dfn> (''px''):
 
 	<table class="data" export>
 	<thead>
@@ -1113,7 +1113,7 @@ Absolute lengths: the ''cm'', ''mm'', ''Q'', ''in'', ''pt'', ''pc'', ''px'' unit
 	All of the absolute length units are <a>compatible</a>,
 	and ''px'' is their <a>canonical unit</a>.
 
-	For a CSS device, these dimensions are <dfn lt="anchor unit">anchored</dfn> either
+	For a CSS device, these dimensions are <dfn lt="anchor unit | anchor">anchored</dfn> either
 
 	<ol type=i>
 		<li>by relating the <a>physical units</a> to their physical measurements, or
@@ -1717,7 +1717,7 @@ Computed Value</h4>
 
 	<div class='example'>
 		For example,
-		whereas 'font-size' computes percentage values at <a>computed value time</a>
+		whereas 'font-size' computes percentage values at <a>computed value</a> time
 		so that <a>font-relative length</a> units can be computed,
 		'background-position' has layout-dependent behavior for percentage values,
 		and thus does not resolve percentages until used-value time.