diff --git a/src/Customer.cpp b/src/Customer.cpp
index 9b5f2a8..3f54a89 100644
--- a/src/Customer.cpp
+++ b/src/Customer.cpp
@@ -23,7 +23,7 @@ void Customer::gen_monthly(){
     std::cout << "NAME: " << name << " card code: " << card_code << "\n";
     std::cout << "-------------------------------------------------\n";
     for (auto& i : park_instances) {
-        // need some logic to only include from this month
+        // TODO: need some logic to only include from this month
         std::cout << i;
     }
     std::cout << "-------------------------------------------------\n\n";
diff --git a/src/headers/Customer.h b/src/headers/Customer.h
index 58589e0..9567bbe 100644
--- a/src/headers/Customer.h
+++ b/src/headers/Customer.h
@@ -24,7 +24,7 @@ public:
     string card_code;
     void clock_in(int s_id);
     void clock_out(int s_id);
-    // void gen_weekly();
+    // void gen_weekly(); TODO: this
     void gen_monthly();
     Customer(int id_, string name_, string card_code_);
 
diff --git a/src/headers/Park_spot.h b/src/headers/Park_spot.h
index e3984cf..83239ee 100644
--- a/src/headers/Park_spot.h
+++ b/src/headers/Park_spot.h
@@ -12,10 +12,8 @@ class Park_spot {
     public:
     int id;
     bool taken;
-    Customer* parked;
+    Customer* parked; //TODO: think about memory management
     Park_spot(int id_);
     void clock(Customer* c_customer);
     private:
-};
-
-
+};
\ No newline at end of file
diff --git a/src/headers/Park_time.h b/src/headers/Park_time.h
index 5778d31..a35067f 100644
--- a/src/headers/Park_time.h
+++ b/src/headers/Park_time.h
@@ -31,6 +31,7 @@ public:
 private:
     high_resolution_clock::time_point start;
     high_resolution_clock::time_point end;
+    //TODO: discuss pros cons of using chrono, ctime, or 3th party lib
 };