OptionalchangesDesignates a fast-changing value for which delta changes are unavailable.
Optionalfixed?: booleanDesignates a value as unchanging short of software replacement.
Optionalnonvolatile?: booleanDesignates attribute value persistant across restarts?
Optionalquieter?: booleanDesignates data with fluctuating product rate or where some deltas are meaningless or otherwise undesirable to report.
Quality values that apply to attribute data.