O - Commands  
OFFSET (command)
   Overview   Operations  Commands 

It creates concentric circles, parallel lines and parallel curves

 Modify toolbar: 

 Command line: OFFSET

Select object to offset: Use a selection method

Specify offset distance or [Through/break at Intersection] <current>:Specify a distance, enter an option or press ENTER

Specify offset distance or [Through/break at Intersection] <1.0000>

View all the hidden text on the current page.