Lines are autonomous non-LTR retro-transposons. They encode enzymes needed for transposition, and like other transposons, generate target site direct repeats flanking the inserted element. But they don't have long terminal repeats. Instead, flanking the open reading frames, those orfs, are 5 prime and 3 prime untranslated regions, or UTRs. The reverse transcribed transposition-ready line retro-transposon will consist only of the DNA regions symbolized here in yellow, I guess that's yellow, including the 5 prime and 3 prime untranslated regions for UTRs.