# doc

Displays documentation.

## 📝 Syntax

* doc
* doc function\_name
* doc('function\_name')

## 📥 Input argument

* function\_name - a string: function name

## 📄 Description

doc launches help browser.

doc('function\_name') displays the help about function designed by 'function\_name'.

## 💡 Examples

```matlab
doc()
```

```matlab
doc sin
```

```matlab
doc is
```

## 🔗 See also

[help](https://nelson-9.gitbook.io/Nelson/markdown/en/help_tools/help).

## 🕔 History

| Version | 📄 Description  |
| ------- | --------------- |
| 1.0.0   | initial version |
