diff --git a/main.c b/main.c
--- a/main.c
+++ b/main.c
@@ -170,6 +170,7 @@ void update_temp() {
 
 
 // PID implementation
+// TODO: Make struct that has the last_temp and i_state in it, pass by ref. Make struct that has other input values maybe.
 int16_t last_pid_temp = 0;
 uint8_t last_pid_temp_frac = 0;
 int16_t i_state = 0;
@@ -324,6 +325,8 @@ void save_setpoints()
     Minimal_EEPROM_Lock();
 }
 
+
+// TODO: Make a struct that has all settings in it. Pass by ref to this func in a library.
 void restore_settings()
 {
     Minimal_EEPROM_Unlock();