CAD tip # 5241:

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CAD

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Slow object selection preview highlighting.

AutoCAD 2007 (and higher) previews the selected objects (hoover) by thickening the objects under cursor.

If you are slowed down by this function in large drawings (e.g. on cycling of overlapping objects), you can switch to the classic entity highlighting with dashed lines -- set the PREVIEWEFFECT variable to 0 (the default value is 2). You can also set this value using the dialog Options > Selection > Visual effects > Selection preview. With the "Advanced options" button you can exclude some complex (slow) object types (e.g. xrefs, mtexts, tables) from the selection preview.

ACAD2010ACAD2008ACAD2007ADT2007

*CAD

19.10.2006 24693×

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applies to: AutoCAD 2010 · AutoCAD 2008 · AutoCAD 2007 · AutoCAD Architecture 2007 ·

See also:
Tip 14472:	Overview of CAD formats supported in Inventor 2026 (import/export/AnyCAD).
Tip 14395:	CheckAngles - checking the allowed line angles in the DWG drawing (e.g. only ortho)
Tip 14363:	Yesterday's, tomorrow's, past or future date in the DWG drawing.
Tip 14361:	Extended ATTOUT/ATTIN for block attribute management in Excel (also for LT).
Tip 14242:	How to find the minimum, maximum or local extreme of a 2D or 3D curve?

Selected tip: How to open an AutoCAD file directly from the Internet?

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