Thanks again – I have a lot to learn, but I find this stuff very interesting!

I think my question was not very specific. I want the line width to be the same, and the point size to varry accordingly. So if I have COW MILKER (10 characters) on one line, and MEN OF LARGE OR SMALL CAPITAL (29 characters) on another, I want the point size to increase or decrease to fit the line proportionally.