example script on how to dump upstream 2000 bp from a sequence
example script on how to dump upstream 2000 bp from a sequence

mjg17/ensembl,mjg17/ensembl,Ensembl/ensembl,mjg17/ensembl,at7/ensembl,james-monkeyshines/ensembl,danstaines/ensembl,muffato/ensembl,muffato/ensembl,Ensembl/ensembl,mjg17/ensembl,at7/ensembl,Ensembl/ensembl,james-monkeyshines/ensembl,willmclaren/ensembl,danstaines/ensembl,james-monkeyshines/ensembl,muffato/ensembl,james-monkeyshines/ensembl,Ensembl/ensembl,at7/ensembl,at7/ensembl,muffato/ensembl,danstaines/ensembl,willmclaren/ensembl