Availability of methods belonging to the penguin object
(Display Figure 11.)
Figure 11 shows all of the methods that can be called on an individual penguin object when it is extracted from the array.
A method to set the isShowing property to true (as I did in the program named Alice0175d) is not available.
That is why it was necessary for me to switch from the isShowing property to the opaque property for the purpose of controlling the visibility of the penguin objects in this program.