Class descriptions

  A list of the classes defined, where  indentation is
  used to imply subclassing, is given below:

          Object
             UndefinedObject
             Symbol
             Boolean
                True
                False
             Magnitude
                Char
                Number
                   Integer
                   Float
                Radian
                Point
             Random
             Collection
                Bag
                Set
                KeyedCollection
                   Dictionary
                      Smalltalk
                   File
                   SequenceableCollection
                      Interval
                      LinkedList
                         Semaphore
                      File
                      ArrayedCollection
                         Array
                         ByteArray
                         String
             Block
             Class
             Process