diff --git a/4.1-Extensions.md b/4.1-Extensions.md
index b036079..bf93f6e 100644
--- a/4.1-Extensions.md
+++ b/4.1-Extensions.md
@@ -17,15 +17,14 @@ These are all, where applicable, best configured to `deny-all` and whitelist.
 * [Decentraleyes](https://addons.mozilla.org/firefox/addon/decentraleyes/) <sup>✔ [Privacy](https://addons.mozilla.org/firefox/addon/decentraleyes/privacy/)</sup> | [GitHub](https://github.com/Synzvato/decentraleyes)
 * [HTTPS Everywhere](https://addons.mozilla.org/firefox/addon/https-everywhere/) <sup>✔ [Privacy](https://www.eff.org/code/privacy/policy)</sup> | [GitHub](https://github.com/EFForg/https-everywhere)
 * [Smart Referer](https://addons.mozilla.org/firefox/addon/smart-referer/) | [GitHub](https://github.com/meh/smart-referer)
-* [Header Editor](https://addons.mozilla.org/firefox/addon/header-editor/) | [GitHub](https://github.com/FirefoxBar/HeaderEditor)
+* [Header Editor](https://addons.mozilla.org/firefox/addon/header-editor/) | [GitHub](https://github.com/FirefoxBar/HeaderEditor)\
+  * Allows you to run [Rules](https://github.com/ghacksuserjs/ghacks-user.js/wiki/4.2.4-Header-Editor) to modify headers such as blocking ETags
 * [Neat URL](https://addons.mozilla.org/firefox/addon/neat-url/) <sup>✔ [Privacy](https://addons.mozilla.org/firefox/addon/neat-url/privacy/)</sup> | [GitHub](https://github.com/Smile4ever/firefoxaddons)
 * [Skip Redirect](https://addons.mozilla.org/firefox/addon/skip-redirect/) | [GitHub](https://github.com/sblask/webextension-skip-redirect)
 * [Violentmonkey](https://addons.mozilla.org/firefox/addon/violentmonkey/) | [GitHub](https://github.com/violentmonkey/violentmonkey)
-  * Allows you to run [User Scripts](https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.1-User-Scripts) which can do neat things
-* [Request Control](https://addons.mozilla.org/firefox/addon/requestcontrol/) | [GitHub](https://github.com/tumpio/requestcontrol)
-   * Examples of [Filter Rules](https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.5-Request-Control)
+  * Allows you to run [User Scripts](https://github.com/ghacksuserjs/ghacks-user.js/wiki/4.2.1-User-Scripts) which can do neat things
+* [Request Control](https://addons.mozilla.org/firefox/addon/requestcontrol/) | [GitHub](https://github.com/tumpio/requestcontrol) | [Manual](https://github.com/tumpio/requestcontrol/blob/master/_locales/en/manual.md) | [Testing links](https://github.com/tumpio/requestcontrol/wiki/Testing-links)
 * [Redirector](https://addons.mozilla.org/firefox/addon/redirector/) <sup>✔ [Privacy](https://github.com/einaregilsson/Redirector/blob/master/privacy.md)</sup> | [GitHub](https://github.com/einaregilsson/Redirector)
-  * Examples of [Redirects](https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.6-Redirector)
 * [Cookie AutoDelete](https://addons.mozilla.org/firefox/addon/cookie-autodelete/) <sup>✔ [Privacy](https://github.com/Cookie-AutoDelete/Cookie-AutoDelete/wiki/Privacy-Policy)</sup> | [GitHub](https://github.com/mrdokenny/Cookie-AutoDelete)
    * Note: cannot clear localStorage until [FF58+](https://bugzilla.mozilla.org/show_bug.cgi?id=1388428) and breaks with [FPI](https://bugzilla.mozilla.org/show_bug.cgi?id=1381197)