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Within this document, the following metasyntactic conventions will be
used when discussing command line options, commands, arguments and templates:
n
-
Argument is not optional and n must be a valid number.
e|t|dvar
-
Argument is not optional and must be a single alphabetic character.
$tvar
-
Argument is not optional and must be a single alphabetic character,
that is lead by a `$' character.
[text]
-
Argument is optional and text is a valid string of text.
[ab]
-
Arguments are optional, any number may be used in any order, e.g.:
NOTHING, a, b, ab, ba ...
{ab}
-
Arguments are not optional, minimum one up to any number may be used
in any order, e.g.:
a, b, ab, ba ...
[a|b]
-
Arguments are optional, select either a or b, but not both.
a|b
-
Arguments are not optional, select either a or b, but not both.
[a[b]]
-
Arguments are optional, select either a or ab, but
not b.
[a|b[c]]
-
Arguments are optional, select a or b or ac
or bc, but not c.
[a|bc]
-
Arguments are optional, select either ac or bc,
but not a or b or c.
[a]|[b]
-
Argument lists are optional, select either list a or list
b, but not both.
[...]
-
Additional arguments/files may be specified and are optional.
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