put main program code inside a test so that its only run when this module is called on the command line, not when it is imported, so that epydoc can build it
put main program code inside a test so that its only run when this module is called on the command line, not when it is imported, so that epydoc can build it

svn/trunk@5683

nltk/nltk,nltk/nltk,nltk/nltk