超级文本编辑器，允许用户同时打开多个文档，允许用户剪切、拷贝、粘贴，允许用户设置制表位、设置字体、打印字体等。-Super text editor that allows users to open multiple documents at the same time, allowing users to cut, copy, paste, allow users to set up tab, and set the font, pr