def unfilter(ifile=None):
    return ifile and ifile.file or sys.stdout.file
Returns the 'Features' sub_menu.
dataset/ETHPy150Open ipython/ipython-py3k/IPython/external/Itpl/_Itpl.py/unfilter--crossover with--dataset/ETHPy150Open enthought/pyface/pyface/dock/dock_window.py/DockWindow._get_feature_menu