# this is a test
this is a test
this is a tutorial
```{java, copy=TRUE}
class A{
public static void main(String args){
}
}
```
```{python}
print("hello")
+++
def f()
print("hi")
```
# Section 1
## Subsection 1
# Section 2
abc
```sequence
Peter->Bob: hihihi?
Note right of Bob: Bob thinks
Bob-->Alice: I am good thanks!
Note left of Alice: Alice responds
Alice->Bob: Where have you been?
```
```mermaid
gantt
title this is the title
section Section
99999 task :a1, 2014-01-01, 30d
Another task :after a1 , 20d
section Another
Task in sec :2014-01-12 , 12d
anther task : 24d
```


