code: def writeinfo(self, linelist, colour = None):
          
          
          self.checkforpilimage()
          colour = self.defaultcolour(colour)
          self.changecolourmode(colour)
          self.makedraw()
          
          self.loadinfofont()
          
          
          for i, line in enumerate(linelist):
              topspacing = 5 + (12 + 5)*i
              self.draw.text((10, topspacing), line, fill = colour, font = self.infofont)
          
          
          if self.verbose :
              print "I've written some info on the image."
docs: We add a longer chunk of text on the upper left corner of the image.
          Provide linelist, a list of strings that will be written one below the other.