# Field

> Document props, options and parameters.

<CodePreview>
<FieldGroup>
  <Field name="title" type="string" required>
    Site name shown in the header.
  </Field>
  <Field name="subNav" type="'none' | 'header'" default="'none'">
    Where top-level sections are listed.
  </Field>
</FieldGroup>

```mdx
<FieldGroup>
  <Field name="title" type="string" required>
    Site name shown in the header.
  </Field>
  <Field name="subNav" type="'none' | 'header'" default="'none'">
    Where top-level sections are listed.
  </Field>
</FieldGroup>
```
</CodePreview>

## Props

<FieldGroup>
  <Field name="name" type="string" required>Field name.</Field>
  <Field name="type" type="string">Type signature.</Field>
  <Field name="required" type="boolean">Adds a required marker.</Field>
  <Field name="default" type="string">Default value.</Field>
</FieldGroup>