Appendix A -- Drawing Interchange File Formats
ASCII DXF Files
Blocks Group Codes in DXF Files

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

  0
SECTION
  2
BLOCKS


Beginning of BLOCKS section



  0
BLOCK
  5
<handle>
100
AcDbEntity
  8
<layer>
100
AcDbBlockBegin
  2
<block name>
70
<flag>
10
<X value>
20
<Y value>
30
<Z value>
  3
<block name>
  1
<xref path>


Begins each block entry  
(a block entity definition)




















  0
<entity type>
.
. <data>
.


One entry for each entity definition within the block



  0
ENDBLK
  5
<handle>
100
AcDbBlockEnd


End of each block entry
(an endblk entity definition)




  0
ENDSEC


End of BLOCKS section