private void method_12()
{
int sectionStartPosition1 = (int)Class653.smethod_0(this.int_0);
int num1 = sectionStartPosition1 + (int)this.memoryStream_0.Length;
int sectionStartPosition2 = num1 + (int)this.memoryStream_4.Length;
int sectionStartPosition3 = sectionStartPosition2 + (int)this.memoryStream_1.Length;
int sectionStartPosition4 = sectionStartPosition3 + (int)this.memoryStream_2.Length + (int)this.memoryStream_3.Length + (int)this.memoryStream_5.Length;
int sectionStartPosition5 = sectionStartPosition4 + (int)this.memoryStream_6.Length + (int)this.memoryStream_7.Length;
MemoryStream memoryStream = new MemoryStream();
Interface29 streamWriter = Class724.Create(this.dxfVersion_0, (Stream)memoryStream, Encodings.GetEncoding((int)this.dxfModel_0.Header.DrawingCodePage));
streamWriter.imethod_13(Encodings.Ascii.GetBytes(this.dxfModel_0.Header.AcadVersionString), 0, 6);
Interface29 nterface29 = streamWriter;
byte[] numArray = new byte[7];
numArray[5] = (byte)15;
numArray[6] = (byte)1;
byte[] bytes = numArray;
nterface29.imethod_12(bytes);
streamWriter.imethod_19(num1);
streamWriter.imethod_11((byte)27);
streamWriter.imethod_11((byte)25);
int num2 = (int)Class952.smethod_1(this.dxfModel_0.Header.DrawingCodePage);
streamWriter.imethod_13(LittleEndianBitConverter.GetBytes((short)num2), 0, 2);
streamWriter.imethod_13(LittleEndianBitConverter.GetBytes(this.int_0), 0, 4);
long position = this.stream_0.Position;
this.method_13(streamWriter, (byte)0, sectionStartPosition2, (int)this.memoryStream_1.Length);
this.method_13(streamWriter, (byte)1, sectionStartPosition3, (int)this.memoryStream_2.Length);
this.method_13(streamWriter, (byte)2, sectionStartPosition4, (int)this.memoryStream_6.Length);
this.method_13(streamWriter, (byte)3, 0, 0);
this.method_13(streamWriter, (byte)4, sectionStartPosition5, (int)this.memoryStream_9.Length);
this.method_13(streamWriter, (byte)5, sectionStartPosition1, (int)this.memoryStream_0.Length);
streamWriter.Flush();
ushort num3 = Stream1.smethod_1((ushort)49345, memoryStream.GetBuffer(), 0L, memoryStream.Length);
streamWriter.imethod_18((short)num3);
streamWriter.imethod_13(Class800.byte_4, 0, Class800.byte_4.Length);
this.stream_0.Write(memoryStream.GetBuffer(), 0, (int)memoryStream.Length);
}