is invoked, it checks for the presence of namespace packages and updates
their ``__path__`` contents accordingly.
+Applications that manipulate namespace packages or directly alter ``sys.path``
+at runtime may also need to use this API function:
Declare that `path_item` is a newly added item on ``sys.path`` that may
need to be used to update existing namespace packages. Ordinarily, this is
the constructor is called.
Note that you will not normally construct ``WorkingSet`` instances
- yourbut instead you will implicitly or explicitly use the global
+ yourbut instead you will implicitly or explicitly use the global
``working_set`` instance. For the most part, the ``pkg_resources`` API
is designed so that the ``working_set`` is used by default, such that you
don't have to explicitly refer to it most of the time.