Another typo in docs/newforms.txt

The ``__unicode__`` method of the model will be called to generate

string representations of the objects for use in the field's choices;

to provide customized representations, subclass ``ModelChoiceField``

and override ``label_for_model``. This method will receive a model

and override ``label_from_instance``. This method will receive a model

object, and should return a string suitable for representing it. For

example::