Autocad and Mechanical size and placement preview

Yesterday, while trying to export a block to 3ds, my mechanical
crashed. I had to kill the whole application. Since then i have no
size and placement preview while drawing anything. If anyone does not
know what i have in mind i will try to explain it on an example: when
i'm drawing a circle, first i select the circle tool and press my left
mouse button on the drawing area to point the center of the circle;
after that i'm draging with my mouse to specify the size of this
circle and with my mouse cursor should go a circle preview so i would
see how will it look after i press the left mouse button once again
and confirm the size of the circle. But the problem is that this
circle preview is not shown and it's not shown at any command. Is
there maybe a text command or something that turns this option on and
off? Or maybe any other ideas? Thank you for any help and sorry for my
english.

 

Dragmode

--
Patrick Hughes

Engineered Design Solutions
http://www.engds.com

Chronos: Time Logging for AutoCAD
visit http://www.engds.com/Products/Chronos/Chronos.html

 

BTW, your english is better than most Americans.

 

Thank you very much, that was the command i was looking for. And
thanks for the complement.