> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# AuthorInfo Object (IAuthorInfo Interface)

This object is an item of an [authors list](/fine-reader/engine/api-reference/document-related-objects/authorslist) of a FB2 or EPUB file. The object contains information on the first, middle, last, nick names of the author of the document.

## Properties

| Name        | Type                                                                                                                                                                                                          | Description                           |
| ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------- |
| Application | [Engine](/fine-reader/engine/api-reference/engine-object-iengine-interface), [read-only](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties#readonly_properties) | Returns the Engine object.            |
| FirstName   | [BSTR](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties)                                                                                                       | Stores the first name of the author.  |
| LastName    | [BSTR](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties)                                                                                                       | Stores the last name of the author.   |
| MiddleName  | [BSTR](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties)                                                                                                       | Stores the middle name of the author. |
| NickName    | [BSTR](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties)                                                                                                       | Stores the nick name of the author.   |

## Methods

| Name                                                                                                                  | Description                                                                                                                                      |
| --------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ |
| [IsValid](/fine-reader/engine/api-reference/document-related-objects/authorinfo/isvalid-method)                       | Checks whether the specified author is valid. The information of the author is valid, if his nick name or his first and last name are specified. |
| [CopyFrom](/fine-reader/engine/visual-components-reference/supplementary-objects/spellwordcollection/copyfrom-method) | Initializes the properties of the current object with the values of similar properties of another object.                                        |

## Related objects

<Info>
  <Info>
    [](/fine-reader/engine/visual-components-reference/supplementary-objects/spellwordcollection/element-property)[](/fine-reader/engine/api-reference/document-related-objects/documentcontentinfo)[](/fine-reader/engine/api-reference/document-related-objects/authorslist)
  </Info>
</Info>

[Object Diagram](/fine-reader/engine/api-reference/object-diagram)

## Output parameter

This object is the output parameter of the [AddNew](/fine-reader/engine/api-reference/supplementary-objects-and-methods/addnew-method), [Item](/fine-reader/engine/visual-components-reference/supplementary-objects/spellwordcollection/item-method) methods of the [AuthorsList](/fine-reader/engine/api-reference/document-related-objects/authorslist) object.

## See also

[AuthorsList](/fine-reader/engine/api-reference/document-related-objects/authorslist)

[Working with Properties](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties)