def findFirstMovieLine(self, movie):    
        """ Cycle through the whole movie, figure out the highest numbered
            line that == blank on all frames, return that #. Used to trim blank
            lines when saving. """
        movieFirstLine = movie.sizeY
        for frame in movie.frames:
            frameFirstLine = self.findFrameFirstLine(frame)
            if frameFirstLine < movieFirstLine:
                movieFirstLine = frameFirstLine
        return movieFirstLine
 Cycle through the whole movie, figure out the highest numbered
            line that == blank on all frames, return that #. Used to trim blank
            lines when saving. 
durdraw/durdraw_ui_curses.py