DGNRAYSELECTIVEREGEN
Controls whether infinite lines, construction lines, and rays that are imported into a .dgn drawing are automatically regenerated when panning and zooming. It is turned off by default to provide better performance when working with complex drawings. When turned on, the display of infinite lines, construction lines, and rays is always regenerated during pan and zoom operations.
Type: Integer
Saved: In the drawing
Range: 0 (Automatic regeneration is off), 1 (Automatic regeneration is on)
Default: 0