code: def comments(abf,minutes=False):
      
      if not len(abf.commentTimes):
          return
      for i in range(len(abf.commentTimes)):
          t,c = abf.commentTimes[i],abf.commentTags[i]
          if minutes:
              t=t/60
          pylab.axvline(t,lw=1,color='r',ls="--",alpha=.5)
          X1,X2,Y1,Y2=pylab.axis()
          Y2=Y2-abs(Y2-Y1)*.02
          pylab.text(t,Y2,c,size=8,color='r',rotation='vertical',
                     ha='right',va='top',weight='bold',alpha=.5)
          if minutes:
              pylab.xlabel("minutes")
          else:
              pylab.xlabel("seconds")
docs: draw vertical lines at comment points. Defaults to seconds.