silkworm_ReAS_TE.gff is the result of masking silkworm genome with ReAS TE. All on one line, for example here (with descriptions): ------ nscaf100 RepeatMasker TE 9 172 1323 - . TransposonPrediction BGIBMREASTEA00000001 Target "bm_509" 364 192 class "Unknown" ------ Where: nscaf100: is the id of the genome sequence. RepeatMasker: is the method TE: is the kind of sequence. 9: is the start of the gene. 172: is the end of the gene. 1323: is the score of prediction. -: is the strand of gene. BGIBMREASTEA00000001: is the id of the TE. Target "bm_509" 364 192 class "Unknown": is the homology annotation.