[css-grid-1] expand abreviations (editorial)

frivoal · frivoal · commit 1f74bc38bb28 · 2019-01-14T14:49:59.000+09:00
Closes #3493
diff --git a/css-grid-1/Overview.bs b/css-grid-1/Overview.bs
@@ -3017,7 +3017,7 @@ Placement Shorthands: the 'grid-column', 'grid-row', and 'grid-area' properties<
 	Otherwise, it is set to <a value for="<grid-line>">auto</a>.
 
 	Note: The resolution order for this shorthand is row-start/column-start/row-end/column-end,
-	which goes CCW for LTR pages,
+	which goes <abbr title="counterclockwise">CCW</abbr> for <abbr title="left-to-right">LTR</abbr> pages,
 	the opposite direction of the related 4-edge properties using physical directions, like 'margin'.
 
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