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CAD tip # 10397:
Question
A
When you hover cursor on the tab with a loaded DWG drawing, AutoCAD displays thumbnails (previews) of the individual drawings and their layouts - when you move cursor over them, the graphics of the whole drawing is also switched in the main drawing window.
This may be a rather performace-demanding operation with large drawings and the switching proces may be slow or even fail with slower graphics and limited memory. So if you want to switch off this functionality, set the system variable FILETABTHUMBHOVER to 0.
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10.7.2015
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