From 598c08718753581008abbbc1c8cf81e91c0b66df Mon Sep 17 00:00:00 2001
From: Justin Lin <caterpillar@openhome.cc>
Date: Tue, 31 Mar 2020 08:06:31 +0800
Subject: [PATCH] add comment

---
 src/util/flat.scad | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/util/flat.scad b/src/util/flat.scad
index f7af5b7d..eb8942a1 100644
--- a/src/util/flat.scad
+++ b/src/util/flat.scad
@@ -1,3 +1,13 @@
+/**
+* flat.scad
+*
+* @copyright Justin Lin, 2020
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib2x-flat.html
+*
+**/ 
+
 function flat(lt, depth = 1) =
     depth == 1 ? [for(row = lt) each row] :
                  [for(row = lt) each flat(row, depth - 1)];
\ No newline at end of file