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AutoCAD 2025 Developer and ObjectARX
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    • DXF Reference
      • DXF Format
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      • Drawing Interchange File Formats
        • About Drawing Interchange File Formats (DXF)
        • About ASCII DXF Files
          • About the General DXF File Structure (DXF)
          • About Group Codes in DXF Files (DXF)
          • Header Group Codes in DXF Files (DXF)
          • Class Group Codes in DXF Files (DXF)
          • Symbol Table Group Codes in DXF Files (DXF)
          • Blocks Group Codes in DXF Files (DXF)
          • Entity Group Codes in DXF Files (DXF)
          • Object Group Codes in DXF Files (DXF)
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    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

    Parent topic: About ASCII DXF Files

    Related Reference

    • About ASCII DXF Files

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