def change_font(self, event):
        min_size = 1
        cur_size = self.font['size']
        inc = 1 if cur_size > 0 else -1
        if event.num == 4 or event.delta > 0:
            self.font.configure(size=cur_size + inc)
            self.resize(event)
        if event.num == 5 or event.delta < 0:
            if cur_size != min_size * inc:
                self.font.configure(size=cur_size - inc)
                self.resize(event)
return "T" if bamfile contains paired end reads.
dataset/ETHPy150Open Blazemeter/taurus/bzt/modules/screen.py/GUIScreen.change_font--crossover with--dataset/ETHPy150Open CGATOxford/cgat/scripts/runMEDIPS.py/isPaired