View source for File:Four-circles-Solomons-knot.png

Ornamental interlaced "Solomon's knot" design consisting exclusively of intersecting circular arcs. Self-made, declared to be in public domain, generated from the following PostScript source code:
<pre>%!
300 396 translate/A{100 100 100 0 360 arc closepath
stroke -100 100 100 0 360 arc closepath stroke
100 -100 100 0 360 arc closepath stroke
-100 -100 100 0 360 arc closepath stroke}def
48 setlinewidth A 32 setlinewidth .7 .8 .9
setrgbcolor A 8 setlinewidth 0 setgray 4{100 100
100 20 add 144.5 180 arc stroke 100 100 100 20 add
234.5 270 arc stroke 90 rotate}repeat showpage
%EOF</pre>