[css-sizing] Clean available space terminology & usage. Hopefully things will start to link up correctly now.

Author: fantasai

css-sizing-3/Overview.bs

@@ -98,12 +98,14 @@ Terminology</h2>
 		<dt><dfn id="indefinite" lt="indefinite|indefinite size">indefinite size</dfn>
 		<dd>
 			A size that is not <a>definite</a>.
-			An <a>indefinite</a> <a>available size</a> is essentially infinite.
+			<a>Indefinite</a> <a>available space</a> is essentially infinite.
 
-		<dt><dfn id="available" local-lt="available" lt="available size|available inline size|available block size|available space">available space</dfn>
+		<dt><dfn id="available" local-lt="available" lt="available space|available inline space|available block space">available space</dfn>
 		<dd>
-			The space into which a box is laid out.
-			Unless otherwise specified, this is
+			A size representing the space into which a box is laid out,
+			as determined by
+			the rules of the formatting context in which it participates.
+			The space available to a box is usually
 			either a measurement of its <a>containing block</a> (if that is <a>definite</a>)
 			or an infinite size (when it is <a>indefinite</a>).
 			<a>Available space</a> can alternatively be either a

css-sizing/Overview.bs

@@ -99,21 +99,22 @@ Terminology</h2>
 		<dt><dfn id="indefinite" lt="indefinite|indefinite size">indefinite size</dfn>
 		<dd>
 			A size that is not <a>definite</a>.
-			An <a>indefinite</a> <a>available size</a> is essentially infinite.
+			<a>Indefinite</a> <a>available space</a> is essentially infinite.
 
-		<dt><dfn id="available" local-lt="available" lt="available size|available inline size|available block size|available space">available space</dfn>
+		<dt><dfn id="available" local-lt="available" lt="available space|available inline space|available block space">available space</dfn>
 		<dd>
-			The space into which a box is laid out.
-			Unless otherwise specified, this is
+			A size representing the space into which a box is laid out,
+			as determined by
+			the rules of the formatting context in which it participates.
+			The space available to a box is usually
 			either a measurement of its <a>containing block</a> (if that is <a>definite</a>)
 			or an infinite size (when it is <a>indefinite</a>).
 			<a>Available space</a> can alternatively be either a
 			<a>min-content constraint</a> or
 			a <a>max-content constraint</a>.
-
 <!--
 			<p>
-				The space <a>available</a> to a box is determined by the formatting context in which it participates.
+
 				In block, table, and inline formatting contexts [[!CSS21]],
 				the <a>available space</a> is infinite in the block-axis dimension.
 				<span class="issue">What, exactly, is the available space in the inline axis??? What about other formatting models?</span>
@@ -146,7 +147,7 @@ Auto Box Sizes</h3>
 		: <dfn>fill-available inline size</dfn>
 		: <dfn>fill-available block size</dfn>
 		:: Roughly, the <a>size</a> a box would take
-			if it filled its <a>available space</a>
+			if it filled the <a>available space</a>
 			in the given axis.
 			(See [[#extrinsic]].)
 
@@ -284,7 +285,7 @@ New Keywords for 'width' and 'height'</h3>
 		<dt><dfn>fit-content(<<length-percentage>>)</dfn>
 		<dd>
 			Use the fit-content formula
-			with the <a>available size</a> replaced by the specified argument,
+			with the <a>available space</a> replaced by the specified argument,
 			i.e.
 			<code>min(<a>max-content size</a>, max(<a>min-content size</a>, <<length-percentage>>))</code>
 	</dl>

css-step-sizing/Overview.bs

@@ -292,21 +292,21 @@ Stepping Widths: the 'inline-size-step' property {#width}
 Non-negative <<length>>s are valid.
 
 When this property is set to a positive <<length>>
-and the <a>available inline size</a> is <a>definite</a>,
-the <a>available inline size</a> of the element is rounded <em>down</em>
+and the <a>available inline space</a> is <a>definite</a>,
+the <a>available inline space</a> of the element is rounded <em>down</em>
 to the closest multiple of the specified <<length>>
 before it is used.
 
 <div class="note">
-Since this property only adjusts <a>available inline size</a>,
+Since this property only adjusts <a>available inline space</a>,
 it does not guarantee that the <a>inline size</a> of child boxes
 are the multiple of the specified <<length>>
 if there were other constraints.
 </div>
 
 When this property is applied to a multi-column element,
-the <a>available inline size</a> of the content box is not rounded but
-the <a>available inline size</a> of the <a>column box</a> is rounded.
+the <a>available inline space</a> of the content box is not rounded but
+the <a>available inline space</a> of the <a>column box</a> is rounded.
 
 <div class="note">
 When using this property with CSS layout features such as tables or flexbox,