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# Display Online Help

You can display the Distributed Index Handler Reference by sending an action from your web browser. The Distributed Index Handler Reference describes the actions and configuration parameters that you can use with Distributed Index Handler.

For Distributed Index Handler to display help, the help data file (`help.dat`) must be available in the installation folder.

To display help for Distributed Index Handler

1. Start Distributed Index Handler.

2. Send the following action from your web browser:

       http://host:port/action=Help

   where:

   `host` | is the IP address or name of the machine on which Distributed Index Handler is installed.
   `port` | is the ACI port by which you send actions to Distributed Index Handler (set by the `Port` parameter in the `[Server]` section of the configuration file).

   For example:

       http://12.3.4.56:9000/action=help

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