| DRAFT DICTIONARY CBF/imgCIF Extensions Dictionary | Draft version 1.5 for comment | 
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Definition:
        The value of _diffrn_measurement.id must uniquely identify
               the set of mechanical characteristics of the device used to
               orient and/or position the sample used during the collection
               of each diffraction data set.
               If the value of _diffrn_measurement.id is not given, it is
               implicitly equal to the value of
               _diffrn_measurement.diffrn_id.
               Either _diffrn_measurement.device or
               _diffrn_measurement.id may be used to link to other
               categories.  If the experimental setup admits multiple
               devices, then _diffrn_measurement.id is used to provide
               a unique link.
Type: code
Mandatory item: implicit
_diffrn_measurement_axis.measurement_idCategory: diffrn_measurement
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