Copy in AutoCAD

This command is Applicable to AutoCAD_2016, AutoCAD_Architecture_2016, AutoCAD_Civil 3D_2016, AutoCAD_Electrical_2016, AutoCAD MEP_2016, AutoCAD Map 3D _2016, AutoCAD Mechanical_2016, AutoCAD P&ID_2016, AutoCAD Plant 3D_2016, AutoCAD Structural Detailing_2016, and AutoCAD Utility Design_2016.
AutoCAD COPY Command Copies the object at a specified distance in a specified given direction.
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CO Enter in Command Line
With the [COPYMODE] system variable, you may control whether to create multiple number of copies of the object automatically.
AutoCAD COPY Command COPY Command AutoCAD COPY Command GUID 7A9EC2F4 4552 491C BED9 EA8C1CED533F
The following are asked in the command line after initiating the Command :
Select object to copy:  select the specified object to copy and then press [Enter]
Specify basepoint or <Displacement/mOde/Multiple> : Specify a basepoint i.e. base point is the point considered for the reference vector displacement  or enter any one of these options Displacement or mode or Multiple.
Specify 2nd point or [Array] [use 1st point as displacement]: Specify a 2nd point or displacement or enter the available option.

Displacement_

Specify a relative distances and directions using coordinate or cross hair .
The two point you specified defines a vector that indicate how far from original the copied object are placed and in which directions.
If you press [Enter] at the Specified Second Point , the 1st point is interpreted as relative to X,Y,Z displacements. For example, if you specify 3,4 for the basepoint and press [Enter]at the next step, the object is copied 2 unit in the direction and 3 unit in the Ydirection from their previous location.

Mode

Control whether the  COPY Command repeat  automatically [COPYMODE system variable].
Single_
Create a single copy of selected specified object and end the  active command.
Multiple_
Override the Single copy mode settings. The COPY command is set so that  it repeats automatically for the duration of the  active command.