docs

Author: jreback

doc/source/basics.rst

@@ -797,8 +797,10 @@ The return type of the function passed to :meth:`~DataFrame.apply` affects the
 type of the ultimate output from DataFrame.apply
 
 * If the applied function returns a ``Series``, the ultimate output is a ``DataFrame``.
-  The columns match the index ``Series`` returned by the applied function.
+  The columns match the index of the ``Series`` returned by the applied function.
 * If the applied function returns any other type, the ultimate output is a ``Series``.
+* A ``result_type`` kwarg is accepted with the options: ``reduce``, ``broadcast``, and ``expand``.
+  These will determine how list-likes return results expand (or not) to a ``DataFrame``.
 
 :meth:`~DataFrame.apply` combined with some cleverness can be used to answer many questions
 about a data set. For example, suppose we wanted to extract the date where the