[css-grid-1] Grid 2 integration editorial prep:

adjust line breaks, fix css-display terminology, move sentence to more appropriate section.

Author: fantasai

css-grid-1/Overview.bs

@@ -29,7 +29,7 @@ Former editor: Alex Mogilevsky, Microsoft Corporation, alexmog@microsoft.com
 Former editor: Phil Cupp, Microsoft Corporation, pcupp@microsoft.com
 Issue Tracking: Disposition of Comments https://drafts.csswg.org/css-grid-1/issues
 Abstract: This CSS module defines a two-dimensional grid-based layout system, optimized for user interface design. In the grid layout model, the children of a grid container can be positioned into arbitrary slots in a predefined flexible or fixed-size layout grid.
-Ignored Terms: containing block, <ident>, auto, grid-*-start, grid-*-end, flex factor, flex factors, block formatting context, grid-auto-position
+Ignored Terms: auto, grid-*-start, grid-*-end, flex factor, flex factors, grid-auto-position
 Ignored Vars: A, B, C, size-contribution, track-sizes, extra-space
 Link Defaults: css2 (property) margin/min-height/max-height/min-width/max-width, css-align-3 (value) stretch/baseline, css-position-3 (property) left, css-position-3 (property) position, css-writing-modes-3 (dfn) start/end
 At Risk: application of grid placement to absolutely-positioned boxes
@@ -864,14 +864,15 @@ Establishing Grid Containers: the ''display/grid'' and ''inline-grid'' 'display'
 			that is <a>inline-level</a> when placed in <a>flow layout</a>.
 	</dl>
 
-	A <dfn export>grid container</dfn> establishes a new <dfn export>grid formatting context</dfn> for its contents.
-	This is the same as establishing a block formatting context,
+	A <dfn export>grid container</dfn> establishes
+	an [=independent formatting context|independent=] <dfn export>grid formatting context</dfn>
+	for its contents.
+	This is the same as establishing an independent [=block formatting context=],
 	except that grid layout is used instead of block layout:
 	floats do not intrude into the grid container,
 	and the grid container's margins do not collapse with the margins of its contents.
 	The contents of a <a>grid container</a> are laid out into a <a>grid</a>,
 	with <a>grid lines</a> forming the boundaries of each <a>grid items</a>’ containing block.
-	The 'overflow' property applies to <a>grid containers</a>.
 
 	Grid containers are not block containers,
 	and so some properties that were designed with the assumption of block layout
@@ -932,6 +933,8 @@ Sizing Grid Containers</h3>
 <h3 id='overflow'>
 Scrollable Grid Overflow</h3>
 
+	The 'overflow' property applies to <a>grid containers</a>.
+
 	Just as it is included in intrinsic sizing (see above),
 	the <a>grid</a> is also included
 	in a <a>grid container</a>’s <a>scrollable overflow region</a>.
@@ -1749,7 +1752,8 @@ Syntax of ''repeat()''</h5>
 		It can only appear once in the <a>track list</a>,
 		but the same <a>track list</a> can also contain <<fixed-repeat>>s.
 
-	If the ''repeat()'' function ends up placing two <<line-names>> adjacent to each other,
+	If a ''repeat()'' function
+	ends up placing two <<line-names>> adjacent to each other,
 	the name lists are merged.
 	For example, ''repeat(2, [a] 1fr [b])'' is equivalent to ''[a] 1fr [b a] 1fr [b]''.
 
@@ -1908,7 +1912,8 @@ Flexible Lengths: the ''fr'' unit</h4>
 <h4 id='computed-tracks'>
 Computed Value of a Track Listing</h4>
 
-	A <dfn>computed track list</dfn> is a <a spec=infra>list</a>
+	A <dfn>computed track list</dfn>
+	is a <a spec=infra>list</a>
 	alternating between [=line name sets=] and [=track sections=],
 	with the first and last items being [=line name sets=].
 
@@ -1941,7 +1946,8 @@ Resolved Value of a Track Listing</h4>
 
 	When an element generates a [=grid container=] box,
 	the <a href="https://www.w3.org/TR/cssom/#resolved-values">resolved value</a>
-	of the 'grid-template-rows' and 'grid-template-columns' properties is the <a>used value</a>,
+	of its 'grid-template-rows' or 'grid-template-columns' property
+	is the <a>used value</a>,
 	serialized with:
 
 	<ul>