'contain' must not modify overscroll

Author: bgirard

index.bs

@@ -101,7 +101,7 @@ Values have the following meanings:
 <dl dfn-for="scroll-boundary-behavior, scroll-boundary-behavior-x, scroll-boundary-behavior-y" dfn-type="value">
   <dt><dfn>contain</dfn>
   <dd>
-    This value indicates that the element must not perform <a>scroll chaining</a> to any ancestor along the scroll chain regardless of whether the scroll originated at this element or one of its descendants.
+    This value indicates that the element must not perform <a>scroll chaining</a> to any ancestor along the scroll chain regardless of whether the scroll originated at this element or one of its descendants. This value must not modify the overscroll behavior. 
   <dt><dfn>none</dfn>
   <dd>
     This value implies the same behavior as <a>contain</a> and in addition this element must also not show any overscroll affordances.

index.html

@@ -1176,7 +1176,7 @@
 		}
 	}
 </style>
-  <meta content="Bikeshed version f585bc61ca4b271944cd978b64d50b0939de2188" name="generator">
+  <meta content="Bikeshed version 5bd73bb15eb04ad9f7d1a57f012e9ee6eca5a765" name="generator">
   <link href="https://wicg.github.io/scroll-boundary-behavior/" rel="canonical">
 <style>/* style-md-lists */
 
@@ -1366,7 +1366,7 @@
   <div class="head">
    <p data-fill-with="logo"></p>
    <h1 class="p-name no-ref" id="title">CSS Scroll Boundary Behavior Module Level 1</h1>
-   <h2 class="no-num no-toc no-ref heading settled" id="subtitle"><span class="content">Draft Community Group Report, <time class="dt-updated" datetime="2017-04-25">25 April 2017</time></span></h2>
+   <h2 class="no-num no-toc no-ref heading settled" id="subtitle"><span class="content">Draft Community Group Report, <time class="dt-updated" datetime="2017-04-28">28 April 2017</time></span></h2>
    <div data-fill-with="spec-metadata">
     <dl>
      <dt>This version:
@@ -1525,7 +1525,7 @@ <h2 class="heading settled" data-level="4" id="scroll-boundary-behavior-properti
    <p>Values have the following meanings:</p>
    <dl>
     <dt><dfn class="css" data-dfn-for="scroll-boundary-behavior, scroll-boundary-behavior-x, scroll-boundary-behavior-y" data-dfn-type="value" data-export="" id="valdef-scroll-boundary-behavior-contain">contain<a class="self-link" href="#valdef-scroll-boundary-behavior-contain"></a></dfn> 
-    <dd> This value indicates that the element must not perform <a data-link-type="dfn" href="#scroll-chaining" id="ref-for-scroll-chaining-3">scroll chaining</a> to any ancestor along the scroll chain regardless of whether the scroll originated at this element or one of its descendants. 
+    <dd> This value indicates that the element must not perform <a data-link-type="dfn" href="#scroll-chaining" id="ref-for-scroll-chaining-3">scroll chaining</a> to any ancestor along the scroll chain regardless of whether the scroll originated at this element or one of its descendants. This value must not modify the overscroll behavior. 
     <dt><dfn class="css" data-dfn-for="scroll-boundary-behavior, scroll-boundary-behavior-x, scroll-boundary-behavior-y" data-dfn-type="value" data-export="" id="valdef-scroll-boundary-behavior-none">none<a class="self-link" href="#valdef-scroll-boundary-behavior-none"></a></dfn> 
     <dd> This value implies the same behavior as <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain">contain</a> and in addition this element must also not show any overscroll affordances. 
     <dt><dfn class="dfn-paneled css" data-dfn-for="scroll-boundary-behavior, scroll-boundary-behavior-x, scroll-boundary-behavior-y" data-dfn-type="value" data-export="" id="valdef-scroll-boundary-behavior-auto">auto</dfn>