We know that the UNIX world includes people from more than one sex, so please don't take this limitation personally. When discussing UNIX commands, we use boldface type, for example, when talking about the adb command or the vi editor. When discussing kernel variables or symbols, such as msgbuf or panicstr, or other program variables, we use italics. It will be quite obvious when we are discussing file names or commands, so we expect you won't get confused. When demonstrating commands, we show them in a box, using courier font.
User input is shown in bold.
Also, since we include actual screen dialogs, as shown above, you will see a couple of different shell prompts being used. Occasionally, to make things a bit more obvious, we underline key data in screen output. When we to do this, we point it out to you. When we refer to the customer who sent us the crash dump, he will be referred to as a third person. This is the first book of its kind that we know of.