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@@ -1270,8 +1270,19 @@
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       # Set this to true if this is an abstract class (see #abstract_class?).
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       attr_accessor :abstract_class
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-      # Returns whether this class is a base AR class.  If A is a base class and
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-      # B descends from A, then B.base_class will return B.
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+      # Returns whether this class is a base AR class.
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+      #
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+      #   class AbstractPerson < ActiveRecord::Base
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+      #     self.abstract_class = true
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+      #   end
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+      #   
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+      #   class Person < AbstractPerson
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+      #   end
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+      #   
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+      #   ActiveRecord::Base.abstract_class?  # => false
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+      #   AbstractPerson.abstract_class?      # => true
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+      #   Person.abstract_class?              # => false
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+      #
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       def abstract_class?
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         defined?(@abstract_class) && @abstract_class == true
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       end