Clarify that formula applies to two radii, not all four, <http://lists.w3.org/Archives/Public/www-style/2012Mar/0258.html>

Author: fantasai

css3-background/Overview.html

@@ -2902,11 +2902,11 @@ <h3 id=corner-overlap><span class=secno>5.5. </span>Overlapping Curves</h3>
   <p>Let <var>f</var> =
    min(<var>L<sub>i</sub></var>/<var>S<sub>i</sub></var>), where <var>i</var>
    ∈ {top, right, bottom, left}, <var>S<sub>i</sub></var> is the sum of the
-   radii of the corners on side <var>i</var>, and <var>L<sub>top</sub></var>
-   = <var>L<sub>bottom</sub></var> = the width of the box, and
-   <var>L<sub>left</sub></var> = <var>L<sub>right</sub></var> = the height of
-   the box. If <var>f</var> &lt; 1, then all corner radii are reduced by
-   multiplying them by <var>f</var>.
+   two corresponding radii of the corners on side <var>i</var>, and
+   <var>L<sub>top</sub></var> = <var>L<sub>bottom</sub></var> = the width of
+   the box, and <var>L<sub>left</sub></var> = <var>L<sub>right</sub></var> =
+   the height of the box. If <var>f</var> &lt; 1, then all corner radii are
+   reduced by multiplying them by <var>f</var>.
 
   <p class=note>Note that this formula ensures that quarter circles remain
    quarter circles and large radii remain larger than smaller ones, but it

css3-background/Overview.src.html

@@ -2054,8 +2054,8 @@ <h3 id="corner-overlap">Overlapping Curves</h3>
 
 <p>Let <var>f</var> = min(<var>L<sub>i</sub></var>/<var>S<sub>i</sub></var>),
 where <var>i</var> ∈ {top, right, bottom, left},
-<var>S<sub>i</sub></var> is the sum of the radii of the corners on
-side <var>i</var>, and <var>L<sub>top</sub></var> =
+<var>S<sub>i</sub></var> is the sum of the two corresponding radii of the
+corners on side <var>i</var>, and <var>L<sub>top</sub></var> =
 <var>L<sub>bottom</sub></var> = the width of the box, and
 <var>L<sub>left</sub></var> = <var>L<sub>right</sub></var> = the
 height of the box. If <var>f</var> &lt; 1, then all corner radii are