[css3-ui] resize property: tweak direction of resizing wording.

Author: tantek

css-ui/Overview.bs

@@ -574,7 +574,10 @@ including whether the element is absolutely positioned,
 whether it is positioned using the 'right'
 and 'bottom' properties,
 whether the language of the element is right-to-left etc.
-The precise direction of resizing is left to the UA to properly determine as defined by CSS layout and any platform constraints.
+The UA should consider the direction of resizing 
+(as determined by CSS layout),
+as well as platform conventions and constraints when deciding 
+how to convey the resizing mechanism to the user.
 
 The user agent must allow the user to resize the element
 with no other constraints than what is imposed by