# Grammar Checker

### Grammar Checker

**Grammar checker** is a Datasaur extension in the token-based project which corrects grammatical errors on the dataset.

<figure><img src="/files/j441Qc7vknHx21vKrQyR" alt=""><figcaption></figcaption></figure>

#### How to Use Grammar Checker:

1. Enable **Grammar checker** extension from the **Manage extensions** dialog
2. Select a service provider
3. Click **Check document** to enable the checker
4. Click **Clear results** to clear the grammar mistake results

#### How It Works:

* The **Grammar checker** extension will check the entire document
* It will show the list of grammar mistakes on the **Grammar checker** extension and underline the mistakes in red on the token editor

<figure><img src="/files/TT51lmptLVauKz4ffZGD" alt=""><figcaption><p>The grammatically mistaken text will be underlined in red</p></figcaption></figure>

<figure><img src="/files/KBoSmlpWNQQfzok4BcXu" alt=""><figcaption><p>The list of grammar mistakes after enabling the Grammar Checker</p></figcaption></figure>

* Clicking the item on the list of grammar mistakes will jump to the row where it refers to
* When the **Grammar checker** is enabled, it will always recheck the line where text modification happens

> About LanguageTool:
>
> [LanguageTool](https://languagetool.org/) is a free online proofreading service for English, Spanish, and 20 otherf languages. Instantly check your text for grammar and style mistakes.
>
> * We use LanguageTool open-source
> * [Here](https://community.languagetool.org/rule/list?lang=en) is the link to the LanguageTool rules


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