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CAD tip CAD tip # 4404:

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A
To group a series of zoom/pan operations into a single step for the UNDO command you need to set the bit 16 of the UNDOCTL variable.

If this variable is set to the value of at least 17 (default value is 21), the Undo function undoes zoom operations in one step (AutoCAD 2006 and higher).

See also Options/User preferences - Undo/Redo.

ACAD2006ACLT2006ADT2006Map2006
100% *CAD
10.5.2005    8230×  
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See also:
Tip 12049:AutoCAD display (status bar) jumps and flickers while zooming.
Tip 10167:Keyboard shortcuts in Autodesk Fusion 360.
Tip 9443:Undocumented: automatic Zoom All for Inventor views
Tip 7503:Autodesk 3ds Max keyboard shortcuts.
Tip 6342:The hidden commands in Autodesk DWG TrueView.
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