.. _modify_extended_data:

Modify Extended Data
====================

TODO

.. seealso::

    **Tasks:**

    - :ref:`add_custom_data`
    - :ref:`get_extended_data`
    - :ref:`delete_extended_data`
    
    **Tutorials:**

    - :ref:`tut_custom_data`

    **Basics:**
    
    - :ref:`xdata_internals`
    - :ref:`extension_dictionary`
    - :ref:`dxf_tags_internals`

    **Classes:**
    
    - :class:`ezdxf.entities.xdata.XData`
    - :class:`ezdxf.entities.xdict.ExtensionDict`
    - :class:`ezdxf.entities.XRecord`
    - :class:`ezdxf.entities.Dictionary`
    - :class:`ezdxf.entities.DictionaryVar`

    **Helper-Classes:**

    - :class:`ezdxf.entities.xdata.XDataUserList`
    - :class:`ezdxf.entities.xdata.XDataUserDict`
    - :class:`ezdxf.urecord.UserRecord`
    - :class:`ezdxf.urecord.BinaryRecord`
    