diff --git a/Codes/Practical-A4.py b/Codes/Practical-A4.py
index 2a52e83..5945628 100644
--- a/Codes/Practical-A4.py
+++ b/Codes/Practical-A4.py
@@ -47,7 +47,7 @@ def size(Set):
     print(f"Size of set is:\t{len(Set)}")
 
 def iterator(setA):
-    a = iter(setA)
+    a = iter(setA) # iter is a built-in function
     for i in  range(0,len(setA)-1):
         print(next(a),"->",end=' ')
     print(next(a))
@@ -100,7 +100,7 @@ def main():
         print("2 -> Remove value from set")
         print("3 -> Search value in set")
         print("4 -> Show size of set")
-        print("5 -> Iterator (implementation pending)")
+        print("5 -> Iterate")
         print("6 -> Intersection of two sets")
         print("7 -> Union of two sets")
         print("8 -> Difference of two sets")