Record Type 4 - Index to Alternative Feature Identifiers

Field   BV  Fmt Type Beg End Len Description
RT      No   L   A    1    1   1 Record Type
VERSION No   L   N    2    5   4 Version Number
TLID    No   R   N    6   15  10 TIGER/Line ID, Permanent 1-Cell Number
RTSQ    No   R   N   16   18   3 Record Sequence Number
FEAT1   No   R   N   19   26   8 Line Additional Name Identification Number, First
FEAT2   Yes  R   N   27   34   8 Line Additional Name Identification Number, Second
FEAT3   Yes  R   N   35   42   8 Line Additional Name Identification Number, Third
FEAT4   Yes  R   N   43   50   8 Line Additional Name Identification Number, Fourth
FEAT5   Yes  R   N   51   58   8 Line Additional Name Identification Number, Fifth
