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2.2.1 [Undo] command  

It returns one command (operation) which went immediately forward to the origin (It cancels).Defort 100 times
 TOOL KEY 
   CTRL+Z

JCAD maintain the latest commands by [System Environment] .It can chnenge times but More Memorie need.
Even if it starts this command, the command which was starting before it is continued but in the following command, this command cannot be used.

(Object Generate)
[Wire] [Wire Deform] [Sweep] [Revolve] [Polyhedron] [Assign Section]

(Object Edit)
[Resize(Curve)[Vertex]] [BaseWire Edit[Vertex]] [Base Line Edit[Vertex]]
[Base Circle Edit[Vertex]]

(Object Deform)
[Point Move[Ctl-P]] [Line Move[Ctl-P]] [Insert[Ctl-P]] [Line Rotate[Ctl-P]] [Twist[Ctl-P]][Extend/Reduce[Ctl-P]] [Section Deform[Ctl-P]] [Move Rails[Ctl-P]]
[Base Wire Deform[Ctl-P]] [Base Surface Deform[Ctl-P]] [Tension Coefficient]

(Tool)
[Generate Setting] [Arrange Setting] [Ruler] [Protractor]a maximum of 30, a maximum of 30 commands can be returned to.
Even if it starts this command, the command which was starting before it is continued but in the following command, this command cannot be used.

(Object Generate)
[Wire] [Wire Deform] [Sweep] [Revolve] [Polyhedron] [Assign Section]

(Object Edit)
[Resize(Curve)[Vertex]] [BaseWire Edit[Vertex]] [Base Line Edit[Vertex]]
[Base Circle Edit[Vertex]]

(Object Deform)
[Point Move[Ctl-P]] [Line Move[Ctl-P]] [Insert[Ctl-P]] [Line Rotate[Ctl-P]] [Twist[Ctl-P]][Extend/Reduce[Ctl-P]] [Section Deform[Ctl-P]] [Move Rails[Ctl-P]]
[Base Wire Deform[Ctl-P]] [Base Surface Deform[Ctl-P]] [Tension Coefficient]

(Tool)
[Generate Setting] [Arrange Setting] [Ruler] [Protractor]

 
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