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CAD tip CAD tip # 13561:

Question CAD 
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Q - question

Beware of "permanently" hidden objects in DWG drawings.

A - answer AutoCAD offers (since version 2011) the internal command HIDEOBJECTS (and ISOLATEOBJECTS), which can be used to temporarily hide (in the current session) selected DWG objects and temporarily clear the workspace for more detailed editing. The UNISOLATEOBJECTS command will then show the temporarily hidden objects again.

However, pay attention to the setting of the OBJECTISOLATIONMODE variable. If it is set to 1, the object hiding will be valid even between sessions and someone else may then work on your drawing (with hidden objects) who has no idea about the "missing" objects.

Hidden objects will be selected in the "Select All" and other types of non-cursor selection methods. But they are not visible. This can cause a number of problems, especially in bulk editing.

Therefore, be careful when setting the persistent object hiding mode. The only indication of the presence of hidden objects in the drawing (e.g. after opening it) is the button background on the AutoCAD status bar:

100% *  CAD 
3.12.2022    20611×  

See also:
Tip 13694:Individual modification of elements in AutoCAD dynamic arrays.
Tip 13452:HideItem - hiding individual items in AutoCAD arrays
Tip 12997:Hiding Revit dimensions smaller than...
Tip 12172:How to show or hide an object in all visibility states?
Tip 10842:HidePStyle - completely hide selected plot style for printing.

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