Class Group Codes in DXF Files (DXF)

The following is an example of the CLASSES section of a DXF file:

0

SECTION

2

CLASSES

Beginning of CLASSES section

0

CLASS

1

<class dxf record>

2

<class name>

3

<app name>

90

<flag>

280

<flag>

281

<flag>

Repeats for each entry

0

ENDSEC

End of CLASSES section