Important class for storing application defined data in DXF files.
XRECORD objects are used to store and manage arbitrary data. They are composed of DXF group codes ranging
369. This object is similar in concept to XDATA but is not limited by size or order.
To reference a XRECORD by an DXF entity, store the handle of the XRECORD in the XDATA section, application defined data
ExtensionDict of the DXF entity.
Do not instantiate object classes by yourself - always use the provided factory functions!
Duplicate record cloning flag (determines how to merge duplicate entries, ignored by ezdxf):
Raw DXF tag container
Tags. Be careful ezdxf does not validate the content of XRECORDS.