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Header Section
==============
.. module:: ezdxf.sections.header
The drawing settings are stored in the HEADER section, which is accessible by
the :attr:`~ezdxf.document.Drawing.header` attribute of the
:class:`~ezdxf.document.Drawing` object. See the online documentation from
Autodesk for available `header variables`_.
.. seealso::
DXF Internals: :ref:`header_section_internals`
.. class:: HeaderSection
.. attribute:: custom_vars
Stores the custom drawing properties in a :class:`CustomVars` object.
.. automethod:: __len__
.. automethod:: __contains__
.. automethod:: varnames
.. automethod:: get
.. automethod:: __getitem__
.. automethod:: __setitem__
.. automethod:: __delitem__
.. automethod:: reset_wcs
.. autoclass:: CustomVars
.. attribute:: properties
A list of custom header properties, stored as string tuples ``(tag, value)``.
Multiple occurrence of the same custom tag is allowed, but not well
supported by the interface. This is a standard Python list and it's safe
to modify this list as long as you just use tuples of strings.
.. automethod:: __len__
.. automethod:: __iter__
.. automethod:: clear
.. automethod:: get
.. automethod:: has_tag
.. automethod:: append
.. automethod:: replace
.. automethod:: remove
.. _header variables: http://help.autodesk.com/view/OARX/2018/ENU/?guid=GUID-A85E8E67-27CD-4C59-BE61-4DC9FADBE74A
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