code: def generate_optimized_y_move_down_x_SOL(y_dist):
      
  
      # Optimization to move N lines and go to SOL in one command. Note that some terminals 
      # may not support this so we might have to remove this optimization or make it optional 
      # if that winds up mattering for terminals we care about. If we had to remove we'd
      # want to rework things such that we used "\x1b[{0}B" but also we would want to change
      # our interface to this function so we didn't guarantee x=0 since caller might ultimate 
      # want it in a different place and we don't want to output two x moves. Could pass in 
      # desired x, or return current x from here. 
            
      string = "\x1b[{0}E".format(y_dist)  # ANSI code to move down N lines and move x to SOL
  
      # Would a sequence of 1 or more \n chars be cheaper? If so we'll output that instead
      if y_dist < len(string):
          string = '\n' * y_dist
          
      return string
docs: move down y_dist, set x=0