---
# System prepended metadata

title: topic

---

# topic
## topic
### topic
1. a
2. b
3. c
4. **thick**
5. *slim*
6. ^上標^
7. ~下標~
8. ~~畫過去~~
9. ==螢光筆==
```c=
#include<stdio.h>
```
 - 1
 - 2
    - 3
       - 4