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# Display Online Help

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

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

To display help for Distributed Action Handler

1. Start Distributed Action 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 Action Handler is installed.
   `port` | is the ACI port by which you send actions to Distributed Action 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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