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.
ibus-chewing-0_1_1_20080823-1_fc9:HEAD:ibus-chewing-0.1.1.20080823-1.fc9.src.rpm:1219617084 ibus-chewing-1_0_1_20090227-1_fc10:F-10:ibus-chewing-1.0.1.20090227-1.fc10.src.rpm:1235721693