Also missing some primitive methods and all custom methods

(Display Figure 11.)

Also missing are:

• Some of the primitive methods that belong to a penguin object, plus
• All of the custom methods that belong to a penguin object

I consider this to be a major weakness in Alice.

I discuss the weakness in detail in the section titled "Limitations related to the lack of a cast operator" in the document titled "Appendix E, Restrictions and Limitations for Alice 2.0". 

The material in Appendix E was not written at a level that beginning programming students are likely to understand.

That material was written primarily for the benefit of instructors who are preparing lesson plans for a course in Alice programming.