文本编辑器的功能可模仿EDIT。文本编辑器的功能如：插入、删除、修改、光标移动。块操作有：剪切、拷贝、删除、粘贴等。文件操作有：打开、关闭、保存、另存等。还有菜...

代码说明：

文本编辑器的功能可模仿EDIT。文本编辑器的功能如：插入、删除、修改、光标移动。块操作有：剪切、拷贝、删除、粘贴等。文件操作有：打开、关闭、保存、另存等。还有菜单功能、帮助信息和鼠标操作等。难点是：1、文件的管理；2、鼠标功能与文本编辑和块操作的连接。-text editor functions replicable EDIT. The text editor features such as : insertion, deletion, modification, the cursor movement. Block operation are : Cut, copy, delete, such as glue. File operations : open, closed, preservation, etc. Save. The menu also features, the information and mouse operation. Difficulty : 1, document management; 2, mouse functions with a text editor and block operation of the link.