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local function clearScreen()
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  term.clear()
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  term.setCursorPos(1, 1)
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end
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local modem = peripheral.find("modem") or error("No modem attached", 0)
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modem.open(43) -- Open 43 so we can receive replies
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modem.transmit(15, 43, "Remote Connected")
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print("Enter your message:")
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local userMessage = read()
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modem.transmit(15, 43, userMessage)
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-- And wait for a reply
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local event, side, channel, replyChannel, message, distance
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repeat
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  event, side, channel, replyChannel, message, distance = os.pullEvent("modem_message")
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print(tostring(message))
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clearScreen()
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print(tostring(message))