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The Java Wizard helps programmers create 
   * classes 
   * datatypes via classes. 
   
The class wizard requests class name, superclass, and field specifications. 
From these, it generates a class, its constructor, and optionally a partial 
template for methods and a toString method. 

The union wizard requests a union name and specifications for the variants. 
From these, it generates an abstract class (for the union name) and one 
variant class that extends the abstract class per variant specification. 
Again, it optionally adds templates and toString methods. 

The wizards are added to the Special menu and insert text at the current 
point. 

At the moment they cannot read back code and help with natural program 
edits and transformations. 

The two major files are: 
 wizard.ss, which is the view and provides the user interaction
 class.scm, which is the model and provides the functions for turning 
  a spec into a string that represents a class or a union. 

At the moment, class.scm does not use the Java implementation to perform
basic checks on the information. It just leaves this to the programmer. 
So, for example, if a programmer says a field has type "moo" and "moo" 
doesn't exist as a class, then the wizard inserts a buggy program. 

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bugs: 

drawing: 

* finish drawing unions, recursion

model 

* figure out how to add toString and template flags to the macro version 

view

both

* allow common fields in abstract classes
* parameterize over language level? 
* privacy modifiers