General

This panel is mostly about how things look on the screen: windows, menus, buttons, scroll bars, and fonts. (It used to be called Appearance, but General is more like—yes, you guessed it—the iPhone and the iPad.)

These pop-up menus let you crank up or tone down macOS’s overall colorfulness:

If you choose Other, the Color Picker palette appears, from which you can choose any color your Mac is capable of displaying.

This pop-up menu controls the size of the icons in the Sidebar (Disk icons on the desktop), as you’d expect. But you might not guess that it also controls the type size of those icons. And you’d definitely not guess that it simultaneously adjusts the size and type of the mailbox icons in the Mail program.

These options control the scroll bars of all your windows—including the controversial removal of scroll bars.

When you click a link in, for example, an email message—or on Twitter or Facebook—which web browser should open? Safari? Chrome? Firefox? Here’s where you decide.

This option is for people who liked the old “Save changes before closing?” message that appears when you close a document—instead of the Auto Save feature (Auto Save and Versions). If you turn this item on, Auto Save will still be there in case your program crashes, for example. But when you close that document or its program, you’ll be asked whether or not you want to preserve the changes you’ve made since your last manual Save. Auto Save programs like Pages and TextEdit, in other words, will work just like they used to—and the way all other programs do.

Here it is: the master on/off switch for the macOS feature responsible for reopening your last-used documents and windows each time you open a window.

Usually, the auto-reopening feature saves you time and helps you resume your mental flow. But if you find it disturbing (or if you’re worried about someone else discovering what you’re up to), then turn on this checkbox.

Just how many of your recently opened documents, networked servers, and programs do you want the Mac to show using the Recent Items command in the menu? Pick a number from the pop-up menus.

You know that fantastic synergy you gain if you own both an iPhone and a Mac—the features described starting in Figure 9-5? This is the master on/off switch.

The Mac’s built-in text-smoothing (antialiasing) feature is supposed to produce smoother, more commercial-looking text anywhere it appears on your Mac: in word-processing documents, email messages, web pages, and so on (Figure 10-17).