2802 applies to 2803, closes #658

user.js

@@ -1486,10 +1486,10 @@ user_pref("dom.caches.enabled", false);
        Firefox interface as "Browsing & Download History" and their values will be synced
 ***/
 user_pref("_user.js.parrot", "2800 syntax error: the parrot's bleedin' demised!");
-/* 2802: enable Firefox to clear history items on shutdown
+/* 2802: enable Firefox to clear items on shutdown (see 2803)
  * [SETTING] Privacy & Security>History>Custom Settings>Clear history when Firefox closes ***/
 user_pref("privacy.sanitize.sanitizeOnShutdown", true);
-/* 2803: set what history items to clear on shutdown
+/* 2803: set what items to clear on shutdown (if 2802 is true)
  * [NOTE] If 'history' is true, downloads will also be cleared regardless of the value
  * but if 'history' is false, downloads can still be cleared independently
  * However, this may not always be the case. The interface combines and syncs these
@@ -1503,7 +1503,7 @@ user_pref("privacy.clearOnShutdown.history", true); // Browsing & Download Histo
 user_pref("privacy.clearOnShutdown.offlineApps", true); // Offline Website Data
 user_pref("privacy.clearOnShutdown.sessions", true); // Active Logins
 user_pref("privacy.clearOnShutdown.siteSettings", false); // Site Preferences
-/* 2804: reset default history items to clear with Ctrl-Shift-Del (to match 2803)
+/* 2804: reset default items to clear with Ctrl-Shift-Del (to match 2803)
  * This dialog can also be accessed from the menu History>Clear Recent History
  * Firefox remembers your last choices. This will reset them when you start Firefox.
  * [NOTE] Regardless of what you set privacy.cpd.downloads to, as soon as the dialog