.. py:function:: create_if_action(position = None, size = None, display = DK.GRAPHICAL)

   
   Create a leaf action in the intermediate structure if it is a tree structure.

   The graphical properties are expressed 1/100th of mm.

   They are considered if and only if the owning if block
   has a graphical representation.

   :Parameters:

       **position** : :obj:`Tuple`\[:class:`python:float`, :class:`python:float`], default: :data:`python:None`
           Position of the action.

       **size** : :obj:`Tuple`\[:class:`python:float`, :class:`python:float`], default: :data:`python:None`
           Size of the action.

       **display** : :obj:`DK`, default: :obj:`GRAPHICAL`
           Layout of the action.

   :Returns:

       :obj:`IT`
           ..













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