diff --git a/Overview.html b/Overview.html
index 9285272de..a55b03936 100644
--- a/Overview.html
+++ b/Overview.html
@@ -7,7 +7,7 @@
 
 <p><a class="logo" href="https://whatwg.org/"><img alt="WHATWG" height="100" src="https://resources.whatwg.org/logo-fetch.svg" width="100"></a>
 <h1 id="cors">Fetch</h1>
-<h2 class="no-num no-toc" id="living-standard-—-last-updated-17-october-2016">Living Standard — Last Updated 17 October 2016</h2>
+<h2 class="no-num no-toc" id="living-standard-—-last-updated-24-october-2016">Living Standard — Last Updated 24 October 2016</h2>
 
 <dl>
  <dt>Participate:
@@ -731,6 +731,26 @@ <h4 id="requests"><span class="secno">3.1.5 </span>Requests</h4>
 <dfn data-dfn-for="request" data-export="" id="concept-request-client" title="concept-request-client">client</dfn> (null or an
 <a class="external" data-anolis-spec="html" href="https://html.spec.whatwg.org/multipage/webappapis.html#environment-settings-object">environment settings object</a>).
 
+<p>A <a href="#concept-request" title="concept-request">request</a> has an associated
+<dfn data-dfn-for="request" data-export="" id="concept-request-reserved-client" title="concept-request-reserved-client">reserved client</dfn>
+(null, an <a class="external" data-anolis-spec="html" href="https://html.spec.whatwg.org/multipage/webappapis.html#environment">environment</a>, or an
+<a class="external" data-anolis-spec="html" href="https://html.spec.whatwg.org/multipage/webappapis.html#environment-settings-object">environment settings object</a>). Unless stated otherwise it is null.
+
+<p class="note no-backref">This is only used by <span>navigation requests</span> and worker
+requests, but not service worker requests. It references an
+<a class="external" data-anolis-spec="html" href="https://html.spec.whatwg.org/multipage/webappapis.html#environment">environment</a> for a <a href="#navigation-request">navigation request</a> and an
+<a class="external" data-anolis-spec="html" href="https://html.spec.whatwg.org/multipage/webappapis.html#environment-settings-object">environment settings object</a> for a worker request.
+
+<p>A <a href="#concept-request" title="concept-request">request</a> has an associated
+<dfn data-dfn-for="request" data-export="" id="concept-request-target-client-id" title="concept-request-target-client-id">target client id</dfn>
+(a string). Unless stated otherwise it is the empty string.
+
+<p class="note no-backref">This is only used by <span>navigation requests</span>. It is the
+<a class="external" data-anolis-spec="html" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-environment-id" title="concept-environment-id">id</a> of the
+<a class="external" data-anolis-spec="html" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-environment-target-browsing-context">target browsing context</a>'s
+<a class="external" data-anolis-spec="html" href="https://html.spec.whatwg.org/multipage/browsers.html#active-document">active document</a>'s
+<a class="external" data-anolis-spec="html" href="https://html.spec.whatwg.org/multipage/webappapis.html#environment-settings-object">environment settings object</a>.
+
 <p>A <a href="#concept-request" title="concept-request">request</a> has an associated
 <dfn data-dfn-for="request" data-export="" id="concept-request-window" title="concept-request-window">window</dfn>
 ("<code>no-window</code>", "<code>client</code>", or an
@@ -745,10 +765,6 @@ <h4 id="requests"><span class="secno">3.1.5 </span>Requests</h4>
 explicitly set <a href="#concept-request" title="concept-request">request</a>'s
 <a href="#concept-request-window" title="concept-request-window">window</a>.
 
-<p>A <a href="#concept-request" title="concept-request">request</a> has an associated
-<dfn data-dfn-for="request" data-export="" id="concept-request-target-browsing-context" title="concept-request-target-browsing-context">target browsing context</dfn>
-(null or a <a class="external" data-anolis-spec="html" href="https://html.spec.whatwg.org/multipage/browsers.html#browsing-context">browsing context</a>). Unless stated otherwise it is null.
-
 <p id="keep-alive-flag">A <a href="#concept-request" title="concept-request">request</a> has an associated
 <dfn id="keepalive-flag">keepalive flag</dfn>. Unless stated otherwise it is unset.
 
diff --git a/fetch.bs b/fetch.bs
index 986ccedf9..d900116e1 100644
--- a/fetch.bs
+++ b/fetch.bs
@@ -29,6 +29,9 @@ urlPrefix: https://html.spec.whatwg.org/multipage/
                 text: ancestor browsing context
                 text:origin
                     for:browser
+            urlPrefix: webappis.html
+                text:environment
+                text:environment id
 url:https://html.spec.whatwg.org/multipage/webappapis.html#https-state;spec:html;text:HTTPS state;type:dfn
 url:https://w3c.github.io/webappsec-referrer-policy/#enumdef-referrerpolicy
     type:interface
@@ -746,6 +749,26 @@ outlawing <a>forbidden methods</a> and
 <dfn data-export for=request id=concept-request-client>client</dfn> (null or an
 <a spec=html>environment settings object</a>).
 
+<p>A <a for="/">request</a> has an associated
+<dfn id=concept-request-reserved-client data-export for=request>reserved client</dfn>
+(null, an <a spec=html>environment</a>, or an
+<a spec=html>environment settings object</a>). Unless stated otherwise it is null.
+
+<p class="note no-backref">This is only used by <a>navigation requests</a> and worker
+requests, but not service worker requests. It references an
+<a spec=html>environment</a> for a <a>navigation request</a> and an
+<a spec=html>environment settings object</a> for a worker request.
+
+<p>A <a for="/">request</a> has an associated
+<dfn id=concept-request-target-client-id data-export for=request>target client id</dfn>
+(a string). Unless stated otherwise it is the empty string.
+
+<p class="note no-backref">This is only used by <a>navigation requests</a>. It is the
+<a lt="environment id" spec=html>id</a> of the
+<a spec=html>target browsing context</a>'s
+<a spec=html>active document</a>'s
+<a spec=html>environment settings object</a>.
+
 <p>A <a for="/">request</a> has an associated
 <dfn data-export for=request id=concept-request-window>window</dfn>
 ("<code>no-window</code>", "<code>client</code>", or an
@@ -760,10 +783,6 @@ outlawing <a>forbidden methods</a> and
 explicitly set <a for="/">request</a>'s
 <a for=request>window</a>.
 
-<p>A <a for="/">request</a> has an associated
-<dfn data-export for=request id=concept-request-target-browsing-context>target browsing context</dfn>
-(null or a <a spec=html>browsing context</a>). Unless stated otherwise it is null.
-
 <p id=keep-alive-flag>A <a for="/">request</a> has an associated
 <dfn>keepalive flag</dfn>. Unless stated otherwise it is unset.