[cairo] Drawing circle with thin outline

[Lawrence D'Oliveiro]

On Wed, 21 Dec 2016 09:18:29 -0500, Guest K wrote:

> Can anyone provide a self-contained program that draws a circle in
> Cairo for X11 with thickness of 1pt?

Call
<https://www.cairographics.org/manual/cairo-cairo-t.html#cairo-set-line-width>
to set the line width.