# Mac OS X Tiger/Using this Wikibook
## Using this Wikibook

The team of authors writing this wikibook use a few tricks to make things easier for you. Take a moment to familiarize yourself with them now. If you are confused about the concepts some of these tricks deal with, you'll probably pick them up as you become more comfortable using your computer.

### Menu Arrows

Arrows > Like > These are used to show hierarchy in menus. For example, "Open the menu labeled File, open the menu inside labeled Open With, and then click on the item labeled Preview" could be abbreviated to "File > Open With > Preview".

### The File-system

Likewise, slashes/like/these are used for file locations. "/Applications/Utilities" is shorthand for "Open your hard drive window. Inside is a folder labeled Applications. Open it. Inside the Applications folder is another another folder labeled Utilities. Open that."
If a file location begins with a slash, it means that the location is given from your main hard drive. If a file location begins with a tilde (~), it means that the location is given from your home folder. You'll learn about these places in Chapter 3.

### Shortcut Shorthand

The second most important use of the keyboard (after inputting data) is executing "keyboard shortcuts". A keyboard shortcut, also known as a keystroke, is a sequence of keys that activates a command or feature in the frontmost program.
A keystroke is activated by holding down one or more "modifier keys" and then pressing another key, usually a letter. The combination of modifier keys changes (modifies) the function the letter keys on your keyboard.
There are four modifier keys on the Mac keyboard. Their names, markings, and the symbols used to represent them in this Wikibook are listed in the table below.
Table 1 - Mac Modifier Keys. :
| Name | Marked With | Symbol |
| Control | Control/ctrl | ^ |
| Command | ⌘,  | ⌘ |
| Option | Option, Alt | ⌥ |
| Shift | Shift | ⇧ |
Around the Mac OS and in this wikibook, keystrokes are written using shorthand. Modifier keys are represented by the symbols listed in Table 1. "Press the "B" key while holding down Command" is written as "⌘B". "Press the "B" key while holding down Command and Option simultaneously" is written as "⌘⌥B".

### Synonyms

There are a few sets of words used in this wikibook that mean the exact same thing and are used interchangeably. They are:
* Application, App, Program, Piece of Software
* Users, Accounts, and User Accounts
* Delete and Backspace - Both refer to the key without a ⌦ symbol

### Commonly Confused Keys

Apple Keyboards have a few keys that are named differently from their PC counterparts, and many users call keys by unofficial names. This section will clarify different keys on the Apple Keyboard.
* PC keyboards have two enter keys. On the Mac, one of them is called Return. However, both keys do the same exact thing 99 percent of the time. Therefore, the terms "enter" and "return" are often used interchangeably.
* Most Mac keyboards have two delete keys. One has a ⌦ on it to indicate that it deletes the next character rather than the previous one. To avoid confusion between these two delete keys, it's acceptable to refer to the one with a ⌦ as "forward delete" and the one without as "backspace".
* The key with an Apple logo and a squiggle is often called the Apple key. This is incorrect. The correct name of the key is "Command".

### Windows versus windows

Windows with a capital "W" is the Mac OS competitor produced by Microsoft. A window with a lowercase "w" is the paradigm modern computer interfaces are built around, which is what Microsoft named its operating system after.

### Info Boxes

A computer book mainstay, info boxes have called attention to important tips and warnings for ages. This wikibook is no exception, and it uses four different flavors of info box. These four kinds are shown below:

### Navigation

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