How to make a dot

I have been using CorelDraw for years, and I ashamedly realized I don't know how to make a dot..[:S].. It is simply to mark the center of a circle. Since I need it very exact on a printout, I need a single point--not a little circle. The circles requiring the dot to mark center are usually in hairline. I imagine there must be a very easy way to do this.......

Thanks very much for any help!

​Janet