离开北京前最后的版本，包含打印机程序

xiaojiao

2026-01-24 c5f01e9a882b16f534166d033312c5c8ba8d94dd

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using System;
 
namespace WIDESEA_Core
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");
        }
    }
}