DOS下的全屏幕文本编辑系统。该系统较完整地实现了基本的文本编辑功能。但由于用到了TC中专有的头文件dir.h,因此，目前该系统只能在tc上编译。-Under DOS full-screen text editing system. The system is a more complete realization of the basic text editing features. However, secondary use of the TC, some header files dir