# Check types

#### Grammar check

Grammar check is enabled by default. To disable it:

```js
enableGrammar: false,
```

When grammar check is disabled, only spell check and style check run. Users won't be able to enable grammar from the Settings dialog or the grammar toggle in the UI.

#### Style check

Style suggestions are based on the rules created in the style guide. They're enabled by default. To disable them for users:

```js
disableStyleGuide: true,
```

#### As-you-type proofreading

As-you-type proofreading is enabled by default. To disable it and allow proofreading only through the dialog mode:

```js
proofreadAsYouType: false,
```

#### Spelling autocorrect

Autocorrect automatically fixes common spelling mistakes as users type. It's enabled by default. To disable it:

```js
autocorrect: false,
```

Users can still toggle autocorrect from the Settings dialog. To prevent this, hide the General section using `settingsSections`. If you need to prevent the user's preference from persisting, add `'autocorrect'` to `disableOptionsStorage`.

#### Text autocomplete

Autocomplete suggests the next word or short phrase based on context. Currently available for English only. Users accept suggestions with `Tab` or the `Right arrow` key. It's disabled by default. To enable it:

```js
autocomplete: true,
```

Users can toggle autocomplete from the Settings dialog.

#### AI writing assistant

The AI writing assistant (AIWA) is disabled by default. To enable it:

```js
aiWritingAssistant: true,
```

Users can initiate AIWA by selecting text (minimum 100 characters), clicking the badge, and choosing an action such as rewrite, shorten, expand, etc.

#### Suggestion visibility

You can control which suggestion types are visible to users without disabling the backend checks. All are `true` by default.

```js
spellingSuggestions: true,
grammarSuggestions: true,
styleGuideSuggestions: true,
```

Setting any of these to `false` hides the suggestions in the UI, but requests are still sent to the backend. Users can turn them back on from the General section of the Settings dialog.

#### Check on space

By default, checking is triggered as the user types. To also trigger a check when the user presses space for faster underlining:

```js
checkOnSpace: true,
```

{% hint style="warning" %}
Enabling this option results in more words checked, as a request is sent after each space pressed by the user.
{% endhint %}

#### Language configuration profile

The `checkKit` option lets you choose between algorithmic, AI-powered, or mixed checking modes.

{% hint style="info" %}
Not all configurations are available for all languages. The AI component is currently available for English, German, and Spanish. For languages without AI support, only the algorithmic check kit (`'lt_hs'`) is available. If the specified configuration isn't supported for the selected language, the default configuration is used.
{% endhint %}

| Value         | Description                                                                                                             |
| ------------- | ----------------------------------------------------------------------------------------------------------------------- |
| `'lt_hs'`     | Algorithmic engines only, no AI.                                                                                        |
| `'ai_lt_hs0'` | AI provides grammar and spelling suggestions. Algorithmic engine highlights spelling errors without suggestions.        |
| `'ai_lt_hs1'` | AI provides grammar and spelling suggestions, with algorithmic support where AI doesn't offer coverage.                 |
| `'ai_lt'`     | AI provides grammar and spelling suggestions. Algorithmic grammar runs in parallel but AI takes precedence on overlaps. |
| `'ai'`        | AI only, no algorithmic engines.                                                                                        |


---

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