Textbox position in bar graphs

[Mor Zahavi]

I am trying to change the position of subtitles in bar graphs. I've created a MWE from Stata's dataset:

 
 use http://www.stata-press.com/data/r15/lifeexp, clear graph bar, over(lexp) by(region)

I wish that the subtitle textbox position (of all subgraphs) would be on the red rectangle shown in the attached screenshot (the screenshot shows only one subgraph).
Anyone knows how to do it?

[Nick Cox]

use http://www.stata-press.com/data/r15/lifeexp, clear 

graph bar, over(lexp) by(region) subtitle(, fcolor(none) ring(0) pos(11) nobox nobexpand)

[Mor Zahavi]

Thanks Nick, I don't know what I would do without your prompt and helpful replies.

[Nick Cox]

You would get help from others!

[Mor Zahavi]

Can you tell me where is the option "ring" in the graphics dialog boxes? If it is there at all?

[Nick Cox]

I pass on that one. I never use the dialog boxes for graphics.