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Names of commands, files, and directories, and onscreen computer output 

Edit your .login file.

Use ls -a to list all files.

machine_name% you have mail.

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What you type, as contrasted with onscreen computer output 

machine_name% su

Password:

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Placeholder: replace with a real name or value 

The command to remove a file is rm fileName.

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Book titles, new terms, and emphasized words 

Read Chapter 6 in the User's Guide.

A cache is a copy that is stored locally.

Do not save the file.

Some emphasized items appear online in boldface.