From a4fe86b58c5ebc68ad8845e9cd0d501f3ccea4dd Mon Sep 17 00:00:00 2001
From: Justin Lin <caterpillar@openhome.cc>
Date: Wed, 15 Apr 2020 08:57:42 +0800
Subject: [PATCH] add comment

---
 src/experimental/demo/lsystem3_demo1.scad | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/experimental/demo/lsystem3_demo1.scad b/src/experimental/demo/lsystem3_demo1.scad
index 02c9198b..cc0330ee 100644
--- a/src/experimental/demo/lsystem3_demo1.scad
+++ b/src/experimental/demo/lsystem3_demo1.scad
@@ -1,6 +1,7 @@
 use <experimental/lsystem3.scad>;
 use <hull_polyline3d.scad>;
 
+//  Hilbert curve 3D
 axiom = "A";
 rules = [
     ["A", "B-F+CFC+F-D&F∧D-F+&&CFC+F+B//"],