
>>-+-A-+-------------------------------------------------------><
+-B-+
'-C-'
|
Denotes a set of required alternatives. You must specify
one (and only one) of the values shown. |

.-------.
V |
>>---+-A-+-+---------------------------------------------------><
+-B-+
'-C-'
|
Denotes a set of required alternatives. You must specify
at least one of the values shown. You can specify more than one of them, in
any sequence. |

>>-+---+-------------------------------------------------------><
+-A-+
+-B-+
'-C-'
|
Denotes a set of optional alternatives. You can specify
none, or one, of the values shown. |

.-------.
V |
>>---+---+-+---------------------------------------------------><
+-A-+
+-B-+
'-C-'
|
Denotes a set of optional alternatives. You can specify
none, one, or more than one of the values shown, in any sequence. |

.-A-.
>>-+---+-------------------------------------------------------><
+-B-+
'-C-'
|
Denotes a set of optional alternatives. You can specify
none, or one, of the values shown. A is the default value that is used
if you do not spacify anything. |

>>-| Name |----------------------------------------------------><
Name
|--A--+---+-----------------------------------------------------|
'-B-'
|
A reference to a named section of syntax notation. |

>>-A=value-----------------------------------------------------><
|
A= denote characters
that should be entered exactly as shown. value denotes
a variable, for which you should specify an appropriate value.
|