0

Object name (LAYER_INDEX)

5

Handle

102

Start of persistent reactors group; always "{ACAD_REACTORS"

330

Soft-pointer ID/handle to owner dictionary.

102

End of persistent reactors group, always "}"

100

Subclass marker (AcDbIndex)

40

Time stamp (Julian date)

100

Subclass marker (AcDbLayerIndex)

8

Layer name (multiple entries may exist)

360

Hard owner reference to IDBUFFER (multiple entries may exist)

90

Number of entries in the IDBUFFER list (multiple entries may exist)