Introduction.

This is a header that compare always,
is followed by Common Group Codes for Symbol Table Entries.

Table: Common Group Codes for Symbol Table Entries.

Group
code
Description if omitted,
defaults to
Version
introduction
-1 Application only: entity name (changes each time you open the drawing) Not omitted DXF R13
0 Entity type Not omitted DXF R10
2 Name of the table Not omitted DXF R10
5 Handle Not omitted DXF R10
102 "{ACAD_XDICTIONARY" indicates the start point No default DXF R14
360 Hard owner ID/handle to owner dictionary No default DXF R14
102 End point, "}" No default DXF R14
330 Soft-pointer ID/handle to owner object Not omitted DXF R15/2000
100 Subclass marker (AcDbSymbolTable) Not omitted DXF R13
70 Max number of antries in this table Not omitted DXF R10