本设计完成了要求的所有功能，可由系统建立一张图或者由用户自行建立一张图,并对该图进行关键路径的搜寻.用户界面友好，有用户使用说明,每一步操作都有说明与提示。程序运行通过，有详细的解释说明。-the design completed all the required functions, from the establishment of a system or plan established by the users themselves a map, and this map critical path of the search. User friendly interface, users note, every step of the operation have notes and hints. Running through a detailed explanation.