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# System prepended metadata

title: Untitled

---

## Table of Contents

- [Overview](#Overview)
- [Specifications](#Specifications)
- [Features](#features)


## Overview

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. 

<p align="center">
  <img src = "https://i.imgur.com/wsBghx5.png" width=350>
</p>

## Specifications

* requirement spec
* design spec
* related document

## Features


### (topic name like 熱門置頂)
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. 
* code structure
* Sequence diagram
<p align="center">
  <img src = "https://i.imgur.com/wsBghx5.png" width=700>
</p>
1. API usage sample
2. type definition
3. constant definition
4. error code
* User Interface Specification
5. wireframes
<p align="center">
  <img src = "https://i.imgur.com/4JP7kaY.png" width=700>
</p>
2. operations
3. error handling
* components


## Reference
* [websequencediagrams](https://www.websequencediagrams.com/)
* [imgur.com](https://f2etest.imgur.com/all/?third_party=1)