[SciPy-user] can't get past special.j0

[ehaux at ucmerced.edu]

I'm working through the tutorial(s) 
(http://www.scipy.org/site_content/tutorials/plot_tutorial)
but don't know what to do about the following error:

>>> z = special.j0(r)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
NameError: name 'special' is not defined
>>>

thanks in advance.

Eric