ACAD_PROXY_ENTITY

100

DXF: AcDbProxyEntity

90

DXF: Proxy entity class ID (always 498)

91

DXF: Application entity's class ID. Class IDs are based on the order of the class in the CLASSES section. The first class is given the ID of 500, the next is 501, and so on

92

DXF: Size of graphics data in bytes

310

DXF: Binary graphics data (multiple entries can appear) (optional)

93

DXF: Size of entity data in bits

310

DXF: Binary entity data (multiple entries can appear) (optional)

330 or 340

or 350 or 360

DXF: An object ID (multiple entries can appear) (optional)

94

DXF: 0 (indicates end of object ID section)

95

DXF: Object drawing format when it becomes a proxy (a 32-bit unsigned integer):

Low word is AcDbDwgVersion

High word is MaintenanceReleaseVersion

70

DXF: Original custom object data format:

0 = DWG format

1 = DXF format