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# Define a Default Language Type

You can specify a default language type (language and encoding) that IDOL uses for documents of unspecified language. It uses the default language type when:

- IDOL Server cannot read the language type of a document from a specified field.

- the action does not include a `LanguageType` parameter.

- automatic language detection is not enabled.

The default language type is also the default for the `LanguageType` parameter in actions such as `Query` and `Summarize`.

To specify a default language type

1. Open the IDOL Server configuration file in a text editor.

2. Find the `[LanguageTypes]` section and enter the language type to associate with any document that does not contain a language type field.

   If you use automatic language detection, IDOL Server uses the detected language and encoding to determine the language type of documents, and not the default language type.

   For example:

       [LanguageTypes]
       DefaultLanguageType=englishUTF8
       LanguageDirectory=C:\HewlettPackardEnterprise\IDOLServer\common\langfiles

3. Save and close the configuration file. Restart IDOL Server for your changes to take effect.

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