How to use Copy Command in Auto cad

Method of copy command.

Cmd: CO

          1.    Technique (using distance value method):

Press CO and then Press enter or space bar select object press enter or space bar specify base point and given distance vale (30mm)  and then press enter or space bar.

2.    Technique (using base point method):

In this method if 2 objects are placed and we want to make copy of these object into a same distance so press CO and then press enter or space bar select 2^nd object then press enter specify base of 1^st object and drag mouse on 2^nd object base point and click on it and then click on 3^rd object base point and then 4^th and so on or according to your need.

Video Link: https://www.youtube.com/watch?v=unMGc3Axj9g