[css-navigation-1] Add notes about redirects and with links to issues. (w3c#13181)

Author: dbaron

css-navigation-1/Overview.bs

@@ -31,6 +31,8 @@ url: https://html.spec.whatwg.org/multipage/nav-history-apis.html#navigation-act
 	type: dfn; spec: html; text: activation;
 url: https://html.spec.whatwg.org/multipage/browsing-the-web.html#has-been-revealed
 	type: dfn; spec: html; text: has been revealed;
+url: https://drafts.csswg.org/css-view-transitions-1/#capture-the-image
+	type: dfn; spec: css-view-transitions-1; text: capture the image;
 </pre>
 
 <h2 id="at-route">Declaring named URL patterns: the ''@route'' rule</h2>
@@ -107,6 +109,9 @@ with the URL <code>"/movie-list"</code> resolved relative to the style sheet.
 
 NOTE: The bracing syntax also allows for future expansion if needed.
 
+NOTE: Some of the design discussion for this feature has been in
+<a href="https://github.com/w3c/csswg-drafts/issues/12594">w3c/csswg-drafts#12594</a>.
+
 <h2 id="conditional-navigation-queries">Conditional rules for navigation queries</h2>
 
 <h3 id="at-navigation">Navigation queries: the ''@navigation'' rule</h3>
@@ -290,6 +295,11 @@ the result of the following steps on <var>document</var>:
 The condition of the ''@navigation'' rule
 is the result of the <<navigation-condition>> in its prelude.
 
+NOTE: Some of the design discussion for this feature has been in
+<a href="https://github.com/w3c/csswg-drafts/issues/12594">w3c/csswg-drafts#12594</a>
+and
+<a href="https://github.com/w3c/csswg-drafts/issues/8209">w3c/csswg-drafts#8209</a>.
+
 <h3 id="navigation-when-function">The ''@when/navigation()'' function for ''@when''</h3>
 
 This specification defines an additional function for the ''@when'' rule:
@@ -479,6 +489,9 @@ if the following steps return true:
 				the provided URL pattern,
 				and the from or to URL of the current navigation.
 
+NOTE: Some of the design discussion for this feature has been in
+<a href="https://github.com/w3c/csswg-drafts/issues/13163">w3c/csswg-drafts#13163</a>.
+
 <h2 id="current-nav-urls">Current navigation URLs</h2>
 
 Both the ''@navigation'' rule and the '':link-to()'' pseudo-class
@@ -525,6 +538,11 @@ It is defined as follows:
 
 		NOTE: This part <em>does</em> expose the result of redirects.
 
+		NOTE: This part is not relevant to normal page rendering.
+		However, it can be relevant to what is rendered
+		when [=capturing the image=]
+		for a [[css-view-transitions-2#cross-document-view-transitions|cross-document view transition]].
+
 		ISSUE: Is the final "non-null" check needed?
 
 	1. otherwise, the [=ongoing navigate event=]'s