These two fields allow to specify a different default assignee for ticket opened against this package in bugzilla. Note: The EPEL field is always displayed for packages in the 'rpms' namespace regardless of whether it is used in bugzilla or not.
python-virtualenv-1_2-1_fc10:EL-5:python-virtualenv-1.2-1.fc10.src.rpm:1221353277 python-virtualenv-1_3-1_fc9:EL-5:python-virtualenv-1.3-1.fc9.src.rpm:1222651238