IEEE Standards
documents are developed within the IEEE Societies and the Standards Coordinat-
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Institute. The standards developed within IEEE represent a consensus of the broad expertise on the
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est in participating in the development of the standard.
Use of an IEEE Standard is wholly voluntary. The existence of an IEEE Standard does not imply
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time a standard is approved and issued is subject to change brought about through developments in
the state of the art and comments received from users of the standard. Every IEEE Standard is sub-
jected to review at least every Þve years for revision or reafÞrmation. When a document is more
than Þve years old and has not been reafÞrmed, it is reasonable to conclude that its contents,
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resent a consensus of all concerned interests, it is important to ensure that any interpretation has
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interpretation requests except in those cases where the matter has previously received formal
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