实现了图的广度搜索遍历，同时匹配变量及算法的显示，利用窗口分割的策略显示不同部分的协同，利用文档文件实现子窗口的数据交互。-To achieve the breadth of search traversal of the diagram, while matching variables and the algorithm showed that the use of split window display different parts of the strategy together,