Improve behaviour options

user.js

 user_pref("browser.tabs.searchclipboardfor.middleclick", false);
 user_pref("browser.ctrlTab.sortByRecentlyUsed", false); // ctrl+tab cycles in order
 user_pref("zoom.minPercent", 10); // adjust minimum zoom value
+user_pref("toolkit.zoomManager.zoomValues", ".1,.3,.5,.6,.7,.8,.85,.9,.95,1,1.05,1.1,1.15,1.2,1.3,1.4,1.45,1.5,1.55,1.6,1.7,1.8,1.9,2,2.5,3,4,5,10"); // adjust zoom increments (not mouse wheel)
 user_pref("ui.key.menuAccessKeyFocuses", false); // alt key doesn't open top bar
 user_pref("browser.urlbar.suggest.topsites", false); // don't suggest top sites
-user_pref("browser.urlbar.suggest.calculator", true);
-user_pref("browser.urlbar.unitConversion.enabled", true);
-user_pref("browser.urlbar.quickactions.enabled", false);
-user_pref("browser.urlbar.shortcuts.quickactions", false);
-user_pref("browser.urlbar.autoFill.adaptiveHistory.enabled", true);
+user_pref("browser.urlbar.suggest.calculator", true); // enable calculations in url bar
+user_pref("browser.urlbar.unitConversion.enabled", true); // enable unit conversions in url bar
+user_pref("browser.urlbar.quickactions.enabled", false); // disable quick actions
+user_pref("browser.urlbar.autoFill.adaptiveHistory.enabled", true); // enable adaptive history
+user_pref("browser.urlbar.shortcuts.quickactions", false); // disable quick actions
+user_pref("browser.urlbar.resultMenu.keyboardAccessible", false); // skip url suggestion menus
 
 /* Shutdown */
 // user_pref("privacy.sanitize.sanitizeOnShutdown", true); // clear data on shutdown
 
 /* Downloads */
 // user_pref("browser.download.useDownloadDir", false); // always ask whether to open or save files
+// user_pref("browser.download.always_ask_before_handling_new_types", true); // confirm new file types
 user_pref("browser.download.alwaysOpenPanel", false); // disable automatically opening download panel
 user_pref("browser.download.manager.addToRecentDocs", false); // disable adding downloads to recent documents
-user_pref("browser.download.always_ask_before_handling_new_types", true); // confirm new file types
 user_pref("browser.privatebrowsing.forceMediaMemoryCache", true); // require memory cache for private browsing
 user_pref("browser.download.open_pdf_attachments_inline", true); // force PDFs to open in browser
-user_pref("pdfjs.disabled", false);
-user_pref("pdfjs.enableScripting", false);
+user_pref("pdfjs.disabled", false); // enable pdfjs
+user_pref("pdfjs.enableScripting", false); // enable scripts on pdfjs
 
 /* Forms */
 user_pref("signon.autofillForms", false); // don't autofill login pages
 user_pref("browser.discovery.enabled", false); // disable recommendations in about:addons
 user_pref("browser.messaging-system.whatsNewPanel.enabled", false); // disable what's new
 user_pref("extensions.pocket.enabled", false); // disable pocket
-user_pref("browser.uitour.enabled", false);
-user_pref("browser.uitour.url", "");
-user_pref("browser.urlbar.suggest.quicksuggest.sponsored", false);
-user_pref("browser.preferences.moreFromMozilla", false);
+user_pref("browser.uitour.enabled", false); // disable ui tour
+user_pref("browser.uitour.url", ""); // disable ui tour
+user_pref("browser.urlbar.suggest.quicksuggest.sponsored", false); // removed sponsored suggestions
+user_pref("browser.preferences.moreFromMozilla", false); // remove more from mozilla
 
 /* Telemetry */
 user_pref("datareporting.policy.dataSubmissionEnabled", false);