courier

A command, path, or part of a path. 

italic

A variable. You must replace each occurrence of this text with a valid value for its variable. For the realm variable, use NB, NW, or AT. 

lower-case 

A command or file name that does not require upper-case. 

UPPER-CASE 

Characters you must supply in upper-case. 

[]

Brackets around an optional part of the command line. 

{}

Braces around two or more options, separated by pipes (|), from which you must choose. 

|

A pipe to separate choices enclosed in braces. 

()

Parentheses to group the options they enclose. 

...

An ellipsis to indicate that you may include as many specifications as you wish for the preceding option.