0

Object name (GROUP)

5

Handle

102

Start of persistent reactors group; always "{ACAD_REACTORS" (persistent reactors group appears in all dictionaries except the main dictionary)

330

Soft-pointer ID/handle to owner dictionary. For GROUP objects this is always the ACAD_GROUP entry of the named object dictionary.

102

End of persistent reactors group, always "}"

100

Subclass marker (AcDbGroup)

300

Group description

70

"Unnamed" flag: 1 = unnamed; 0 = named

71

Selectability flag: 1 = selectable; 0 = not selectable

340

Handle of entity in group (one entry per object)