说明：  本设计是一个简单的行编辑器。它主要能实现五个主要内容： 1、字符的按行录入及储存；2、文件内容的显示；3、文件内容的查找；4、文件内容的替换5、文件的修改。 设计按数标准I/O下文件系统软件工程的方法进行,系统应具有良好的界面、必要的交互信息和较好的健壮性；醒目美观的软件封面。操作人员能快捷简单地进行操作。
(The design is a simple line editor. It is mainly to achieve the five main elements: 1, character input and stored by the line 2, display the contents of the documents 3, search the contents of the documents 4, 5 to replace the content of a document, the document changes. Standards designed by the number of I/O under the file system software engineering methods, the system should have a good interface and, if necessary, interactive information and better robustness eye-catching cover of beautiful software. The operator can carry out quick and easy operation.)