2.3.5.2 EMR_ARC Record
The EMR_ARC record specifies an elliptical arc.
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Type (4 bytes): An unsigned integer that identifies this record type as EMR_ARC. This value is 0x0000002D.
Size (4 bytes): An unsigned integer that specifies the size of this record in bytes.
Box (16 bytes): A RectL object ([MS-WMF] section 2.2.2.19), which specifies the inclusive-inclusive bounding rectangle in logical units.
Start (8 bytes): A PointL object ([MS-WMF] section 2.2.2.15), which specifies the coordinates in logical units of the ending point of the radial line defining the starting point of the arc.
End (8 bytes): A PointL object that specifies the coordinates in logical units of the ending point of the radial line defining the ending point of the arc.
See section 2.3.5 for more drawing record types.