from zope.interface import Interface

class ILayer(Interface):
    """ Marker interface that defines a Zope 3 browser layer.
    """

class IDocActionsAsIconsLayer(Interface):
    """ Marker interface that defines a Zope 3 browser layer.
    """

class IRestrictedAccessLayer(Interface):
    """ Marker interface that defines a Zope 3 browser layer.
    """
