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.
gromacs-4_0_3-3_fc10:F-9:gromacs-4.0.3-3.fc10.src.rpm:1232377614 gromacs-4_0_3-4_fc10:F-9:gromacs-4.0.3-4.fc10.src.rpm:1232377902