Indicates a command or keyword that you should type.
All characters must be entered in the order shown; lowercase characters
are optional but must be typed in uppercase.
For example, MAXimum indicates that
you should type either MAXIMUM or MAX.
italics
Indicates a variable for which you should substitute
an appropriate value.
monotype
Indicates literal input and output.
Ctrl+D
Indicates two or more keys pressed simultaneously.
[ ]
Brackets surround an optional value.
|
Vertical bars separate alternative values from which
you must make a selection.
...
Ellipsis indicates that the preceding element may
be repeated.