diff --git a/examples/polyround.scad b/examples/polyround.scad
index b587144..22de88d 100644
--- a/examples/polyround.scad
+++ b/examples/polyround.scad
@@ -1,4 +1,4 @@
-// polyRound example
+// polyRound example per https://learn.cadhub.xyz/docs/round-anything/api-reference#polyround
 
 include <Round-Anything-1.0.4/polyround.scad>