Chapter 6 -- ENTITIES Section
ACAD_PROXY_ENTITY

The following group codes apply to proxy entities. In addition to the group codes described here, see "Common Group Codes for Entities." For information about abbreviations and formatting used in this table, see "Formatting Conventions in This Reference."

Acad_proxy_entity group codes
Group codes Description

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