From 8865d1cf36fb3ea6115c183e8d02ea8315fc7510 Mon Sep 17 00:00:00 2001
From: Justin Lin <justin.sdk@gmail.com>
Date: Sat, 29 May 2021 09:56:10 +0800
Subject: [PATCH] update README

---
 README.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/README.md b/README.md
index d0c085c6..56615582 100644
--- a/README.md
+++ b/README.md
@@ -351,6 +351,12 @@ These examples incubate dotSCAD and dotSCAD refactors these examples. See [examp
 
 # Preview
 
+## Surface
+
+ Signature | Description
+--|--
+[**surface/sf_curve**(levels, curve_path, ...) | curve a photo.
+
 ## Triangle
 
  Signature | Description