In Yosemite and El Capitan, Apple slimmed down the stuff at the top of the window. There’s no title bar anymore, for example. So the real estate on the bar that does remain—the address/search bar, the one Apple calls the toolbar—is precious.
Fortunately, you can summon or dismiss individual buttons on the toolbar, in effect customizing it (Figure 17-7).
Figure 17-7. To summon this toolbar-tailoring screen, choose View→Customize Toolbar. Drag the buttons you want directly onto the address bar. There’s no way to summon text labels for these icons once they’re on the toolbar. But all offer tooltip labels that you can read by pointing to the buttons without clicking.
Here’s a catalog of your options:
Back/Forward. Click the Back button (
) to revisit the page you were just on, or 
to return to the page you were on before you clicked the Back button. See the beginning of this chapter for more details.iCloud Tabs open whatever browser windows and tabs you had open on your other Apple gadget, like an iPhone or iPad or another Mac (running OS X Mountain Lion or later). Thanks to the miracle of iCloud syncing, the last windows and tabs you had open on that other gadget (even if the gadget is turned off) show up here. This is visible in Figure 17-13.
Share. Here’s the standard OS X Share menu, for sending a web page to another person, or to your Notes app, for example.
Show All Tabs. See Tab View.
Top Sites opens, of course, the Top Sites window (Top Sites).
Home. Click to bring up the web page you’ve designated as your home page (in the Safari→Preferences→General tab).
History. Click to open the list of websites you’ve visited recently in a window—a much easier-to-navigate display than the History menu.
Sidebar shows or hides the Sidebar, the left-side column of bookmarks, saved articles, or RSS feeds.
Favorites Bar. Hides or shows the horizontal toolbar that lists your favorite bookmarks (the equivalent of choosing View→Favorites Bar).
AutoFill. Click this button to make Safari fill in web order forms with your name, address, and other information. See the next section.
Zoom. These handy buttons make the current page’s type size smaller or bigger each time you click. The keyboard shortcuts are ⌘-plus or ⌘-minus.
Open in Dashboard. This icon is the key to creating Dashboard web clips, as mentioned on Widget Catalog. Click this button, and then select the part of the page you want to widgetize. It’s the equivalent of the File→Open command in Dashboard.
Mail. Opens a new, outgoing email message in your email program. The subject line contains the name of the site you were visiting; the body contains the actual web page—not just a link, as in the olden OS X days. You can address the message, add a comment (“Re: your claim that ‘no expert’ recommends trampolines for children”), and send it.
Print. You can add a printer icon to Safari for point-and-click paper action if you don’t want to bother with ⌘-P.
Web Inspector produces a split-screen effect. The bottom of your window displays the raw, underlying HTML code that produces the pleasant, readable image in the top half. For web designers and debuggers.
Address/search bar. Yep, it’s the toolbar, where you type in the web address you want to call up.
Flexible Space. This isn’t really a button. It’s an invisible “tile” that you can drag between other buttons to adjust the button spacing on your toolbar.