Drawing Interchange File Formats
ASCII DXF File Format
Symbol Table Example

This DXF sequence represents three full objects: the symbol table itself plus two entries.

  0
TABLE              It's a table, but what kind?
  2
STYLE              This kind. Exception to rule that code 0 fully defines type.
  5
1C                 STYLE table handle; same as for entities and other objects.
70
3                  Maximum number of STYLE table records to follow (pre-Release 13 field).
1001
APP_X              APP_X has put xdata on a symbol table.
1040
42.0               Just a single floating-point number.
  0
STYLE              Beginning of first element in the STYLE symbol table.
  5
3A                 The first entry's handle. (DIMSTYLE entries will have 105 here.)
  2
ENTRY_1            The first entry's text name.
70
64                 Standard flag values.
40
.4                 Text height.
41
1.0                Width scale factor.
50
0.0                Oblique angle.
71
0                  Text generation flags.
42
0.4                Last height used.
  3
BUFONTS.TXT        Primary font file name.
  0
STYLE              Second entry begins. No xdata or persistent reactors on first entry.
  5
C2                 Second entry handle.
  2
ENTRY_2            Second entry text name.
...
...                Other fields down to group code 3.
  3
BUFONTS.TXT        Primary font file name and last object type--specific group.
102
{ACAD_REACTORS     This entry has a couple of persistent reactors.
330
3C2                Soft ID to first reactor object.
330
41B                Soft ID to first reactor object.  
102
}                  Indicates the end of the reactor set.  
1001
APP_1              Xdata attached to this entry.  
1070
45  
1001
APP_2  
1004
18A5B3EF2C199A  
  0

UCS                Start of UCS table (and end of previous record and table).