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### Pop-up command window for debugging

As a server does not have any standard input device such as a keyboard, it is difficult to debug user programs running on the server. ``ox_asir'` pops up a small command window to input debug commands when an error has occurred during user a program execution or `ox_rpc(id,"debug")` has been executed. The responses to commands are shown in ``xterm'` to display standard outputs from the server. To close the small window, input `quit`.

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