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CAD tip # 4404:

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	Which variable controls the grouping of Zoom operations for Undo?
	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.

ACAD2006LT2006ADT2006Map2006

* CAD

10.5.2005 6231×

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applies to: AutoCAD 2006 · AutoCAD LT 2006 · AutoCAD Architecture 2006 · AutoCAD Map 2006 ·

See also:
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.
Tip 3769:	How to restore layer state without undoing editing changes?

Selected tip: How to transfer your Plot style table to Excel?

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CAD tip # 4404:

Which variable controls the grouping of Zoom operations for Undo?