The irAuthor command accepts some parameters, as follows:
irAuthor.exe [ [/open:]file_path ] [ /deletesettings ] [ /culture:culture_name ]
Specifies the path and name of a rule application or Rule Trace file to open. The file name must end with ruleapp, ruleappx, or ruletrace.
The prefix "/open:" is not required.
Deletes all irAuthor settings, such as the recent rule applications list.
Allows you to specify a culture that differs from your computer's environment.
For example, the command:
irAuthor.exe InvoiceSample.ruleappx /culture:en-AU
starts irAuthor with the English(Australia) culture and opens the InvoiceSample.ruleappx file.