52 строки
2.1 KiB
Plaintext
52 строки
2.1 KiB
Plaintext
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/*!\page rfc2119 RFC2119 Keywords
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The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL
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NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and
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"OPTIONAL" in this document are to be interpreted as described in
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<a href="http://www.ietf.org/rfc/rfc2119.txt">RFC 2119.</a>
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Specifically, the following definitions are used:
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\section MUST
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\anchor REQUIRED
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\anchor SHALL
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This word, or the terms "REQUIRED" or "SHALL", mean that the
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definition is an absolute requirement of the specification.
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\section MUSTNOT MUST NOT
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\anchor SHALLNOT
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This phrase, or the phrase "SHALL NOT", mean that the
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definition is an absolute prohibition of the specification.
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\section SHOULD
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\anchor RECOMMENDED
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This word, or the adjective "RECOMMENDED", mean that there
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may exist valid reasons in particular circumstances to ignore a
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particular item, but the full implications must be understood and
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carefully weighed before choosing a different course.
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\section SHOULDNOT SHOULD NOT
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\anchor NOTRECOMMENDED
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This phrase, or the phrase "NOT RECOMMENDED" mean that
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there may exist valid reasons in particular circumstances when the
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particular behavior is acceptable or even useful, but the full
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implications should be understood and the case carefully weighed
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before implementing any behavior described with this label.
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\section MAY
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\anchor OPTIONAL
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This word, or the adjective "OPTIONAL", mean that an item is
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truly optional. One vendor may choose to include the item because a
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particular marketplace requires it or because the vendor feels that
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it enhances the product while another vendor may omit the same item.
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An implementation which does not include a particular option \ref MUST be
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prepared to interoperate with another implementation which does
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include the option, though perhaps with reduced functionality. In the
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same vein an implementation which does include a particular option
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\ref MUST be prepared to interoperate with another implementation which
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does not include the option (except, of course, for the feature the
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option provides.)
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*/
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