This object has space for a bounding box, but the 4 words should be set to zero.
Offset Contents
0 paper size e.g. A3 = &400
A4 = &500
A5 = &600
4 paper limits meaning when bit set:
0 show limits
4 landscape
8 default to printer limits
1-3,5-7,9-31 0 (reserved)
8 grid spacing (floating point)
16 grid division
zero: non-zero:
20 grid rectangular isometric
24 auto-adjust off on
28 grid shown no yes
32 units inches cm
36 zoom multiplier (1-8)
40 zoom divider (1-8)
44 zoom locking none powers of 2
48 toolbox absent present
52 initial entry mode - bit set for
0 line
1 closed line
2 curve
3 closed curve
4 rectangle
5 ellipse
6 text line
7 select
56 bytes in undo buffer
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