DXF Group Codes
ENTITIES Section
REGION

The following group codes apply to region entities.

Region group codes
Group codes Description

100

Subclass marker (AcDbModelerGeometry)

70

Modeler format version number (currently = 1)

1

Proprietary data (multiple lines < 255 characters each)

3

Additional lines of proprietary data (if previous group 1 string is greater than 255 characters)