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CAD tip CAD tip # 5688:

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Where do the layers like "Layer @ 10" or "Layer @ 16" come from?

A - answer When you save a DWG drawing from AutoCAD 2008 to an older version and this drawing contains annotation type objects (with automatic scaling), AutoCAD may convert these objects to separate objects divided into individual layers by the viewport scales used.

This conversion is controlled by the "Maintain visual fidelity for annotative objects" in the Options dialog, the "Open & Save" tab (see also the VISUALFIDELITY variable). In an older version of AutoCAD, these divided objects are stored in generated layers with the " @ given_scale" suffix.

It is recommended to switch off this option for drawings without layout viewports or annotative objects.

100% *  CAD 
3.8.2007    9177×  
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See also:
Tip 11726:Loading 3D models in the OBJ file format to AutoCAD.
Tip 11469:Why you should not use the DEFPOINTS layer to draw geometry?
Tip 11398:Editing block attributes in AutoCAD mobile.
Tip 11289:Adding, multiplying and rounding numbers inside DWG drawing texts - NumInText.
Tip 10952:All DWG texts in UPPERCASE.

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