Refer to the MPI Developer's Kit for further details. Include European or Canadian Plant Breeder's Rights here. If clone is female or male be certain to include the 'sex' field under the taxon. This field is being used by some authors to provide a password for anyone reading a particular section. This can be useful if wish to provide the password in only some versions of your NOD II file.
Most editors use 'reg' now for all data.
Use is discouraged. Can replace 'rd' as a single field for all data. When possible include name of registrant, date of registration, and cite published registration using an 'li' field. Use the taxonomic Section name only. Field is largely unused to date.