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pddmg is unmoderated, private and owned by the Chair of the Group, Brian Toby. Subscribers to the list are strictly limited to the members of the COMCIFS Powder Diffraction Dictionary Maintenance Group, those IUCr officials (viz. President, General Secretary and Treasurer, and Executive Secretary) who request membership of the list, and observers selected by the Chair.
Possible contributions to the discussion by non-subscribers should be sent to the Chair, who will consider their suitability for redistribution within the list.
Brian Toby, pdDMG Chair, 25 September 1998
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