When Alan entered the room he knew something was wrong. It seemed that no one has ever heard about Perl. Al an was absolutely astonished. Everybody knows Perl is absolutely necessary for any real action in Bioinformatics. Alan felt it was his duty to enlighten all the poor souls that lived in the agony of ignorance. Alan tried his best for days and days, but he will only know if his efforts were rewarded if the students really devoted themselves to enter the world of Perl.