From f65d8d2092bf7fd0a35d5a58007f1e89d83b8acd Mon Sep 17 00:00:00 2001
From: oppo-pad-air <3101158440@qq.com>
Date: Wed, 5 Apr 2023 01:48:05 +0800
Subject: [PATCH] 3d principle

---
 file/3Ddisplay.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/file/3Ddisplay.md b/file/3Ddisplay.md
index 9f662c8..dbd676e 100644
--- a/file/3Ddisplay.md
+++ b/file/3Ddisplay.md
@@ -1,2 +1,8 @@
 ### 3Ddisplay
 display something in the terminal in the form of 3D.
+### Principle
++ graph-described file
++ picture-displayed file 
++ a engine to process the file and output ascii pictures-displayed file
++ a converter to tranform pictures-displayed file into something displayed in the terminal
+