Historical-Editions-Summary.md

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     At the same time, the teacher can directly manage and modify the student information in the teacher interface.
     At the same time, taking into account some realistic factors such as leave, 
     we make teachers can give students a supplementary sign on the teacher interface.
+# **Edition 5**
+##
+    In the last version, we added a sign-in reminder on the student login interface, 
+    which is used to remind students of the next sign-in course and the sign-in time to prevent students from missing the sign-in.
+    Similarly, the teacher interface also has a time reminder for the next course to inform the teachers of the next check-in time.
+    We have added three user help pages for teachers, 
+    students and administrators to inform users of the basic operation and functions of the system.
     
 ### Author: Wu Zhuoyu
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