-- Initialize modem
rednet.open("top")

while true do
    local senderID, message = rednet.receive()
    if message == "screen_request" then
        -- Clear the term buffer
        term.clear()
        term.setCursorPos(1, 1)

        -- Capture the screen data
        local screenData = ""
        for y = 1, 19 do -- Assuming a standard ComputerCraft monitor with 19 lines
            screenData = screenData .. term.getLine(y) .. "\n"
        end

        -- Send the screen data back to the host computer
        rednet.send(senderID, screenData)
    end
end