tags:: DXF-Internals

- [Group Code Value Types Reference](https://help.autodesk.com/view/OARX/2018/ENU/?guid=GUID-2553CF98-44F6-4828-82DD-FE3BC7448113)
- [DXF Group Codes in Numerical Order Reference](https://help.autodesk.com/view/OARX/2018/ENU/?guid=GUID-3F0380A5-1C15-464D-BC66-2C5F094BCFB9)