text: class Zoom:
  
      def __init__(self):
          self.zoom = 1
  
      def get_zoom(self):
          return self.zoom
  
      def set_zoom(self, z):
          if self.zoom <= 1:
              self.zoom = 1
          self.zoom = z
  
      def to_string(self):
          return str(self.zoom)
  