XmlmmCIF equivalent: phasing_MAD_clust Data items in the PHASING_MAD_CLUST category record details about a cluster of experiments that contributed to the generation of a set of phases. XmlmmCIF equivalent: phasing_MAD_clust/number_set The number of data sets in this cluster of data sets. XmlmmCIF equivalent: phasing_MAD_clust/expt_id This data item is a pointer to _phasing_MAD_expt.id in the PHASING_MAD_EXPT category. XmlmmCIF equivalent: phasing_MAD_clust/id The value of _phasing_MAD_clust.id must, together with _phasing_MAD_clust.expt_id, uniquely identify a record in the PHASING_MAD_CLUST list. Note that this item need not be a number; it can be any unique identifier.