diff --git a/advanced_calculator.py b/advanced_calculator.py
index 9b1f6fb2d6a..82ff80d8970 100644
--- a/advanced_calculator.py
+++ b/advanced_calculator.py
@@ -1,4 +1,14 @@
+# This is like making a package.lock file for npm package.
+# Yes, I should be making it.
+__author__ = "Nitkarsh Chourasia"
+__version__ = "0.0.0"  # SemVer # Understand more about it
+__license__ = "MIT"  # Understand more about it
+# Want to make it open source but how to do it?
 # Program to make a simple calculator
+# Will have to extensively work on Jarvis and local_document and MongoDb and Redis and JavaScript and CSS and DOM manipulation to understand it.
+# Will have to study maths to understand it more better.
+# How can I market gtts? Like showing used google's api? This is how can I market it?
+# Project description? What will be the project description?
 
 from numbers import Number
 from sys import exit
@@ -12,6 +22,8 @@
 import date
 
 
+# Find the best of best extensions for the auto generation of the documentation parts.
+# For your favourite languages like JavaScript, Python ,etc,...
 # Should be able to print date and time too.
 # Should use voice assistant for specially abled people.
 # A fully personalised calculator.
@@ -26,39 +38,172 @@ def __init__(self):
         self.take_inputs()
 
     def add(self):
+        """summary: Get the sum of numbers
+
+        Returns:
+            _type_: _description_
+        """
         return self.num1 + self.num2
 
     def sub(self):
+        """_summary_: Get the difference of numbers
+
+        Returns:
+            _type_: _description_
+        """
         return self.num1 - self.num2
 
     def multi(self):
+        """_summary_: Get the product of numbers
+
+        Returns:
+            _type_: _description_
+        """
         return self.num1 * self.num2
 
     def div(self):
+        """_summary_: Get the quotient of numbers
+
+        Returns:
+            _type_: _description_
+        """
+        # What do we mean by quotient?
         return self.num1 / self.num2
 
     def power(self):
+        """_summary_: Get the power of numbers
+
+        Returns:
+            _type_: _description_
+        """
         return self.num1**self.num2
 
     def root(self):
+        """_summary_: Get the root of numbers
+
+        Returns:
+            _type_: _description_
+        """
         return self.num1 ** (1 / self.num2)
 
     def remainer(self):
+        """_summary_: Get the remainder of numbers
+
+        Returns:
+            _type_: _description_
+        """
+
+        # Do I have to use the '.' period or full_stop in the numbers?
         return self.num1 % self.num2
 
     def cube_root(self):
+        """_summary_: Get the cube root of numbers
+
+        Returns:
+            _type_: _description_
+        """
         return self.num1 ** (1 / 3)
 
     def cube_exponent(self):
+        """_summary_: Get the cube exponent of numbers
+
+        Returns:
+            _type_: _description_
+        """
         return self.num1**3
 
     def square_root(self):
+        """_summary_: Get the square root of numbers
+
+        Returns:
+            _type_: _description_
+        """
         return self.num1 ** (1 / 2)
 
     def square_exponent(self):
+        """_summary_: Get the square exponent of numbers
+
+        Returns:
+            _type_: _description_
+        """
         return self.num1**2
 
+    def factorial(self):
+        """_summary_: Get the factorial of numbers"""
+        pass
+
+    def list_factors(self):
+        """_summary_: Get the list of factors of numbers"""
+        pass
+
+    def factorial(self):
+        for i in range(1, self.num + 1):
+            self.factorial = self.factorial * i  # is this right?
+
+    def LCM(self):
+        """_summary_: Get the LCM of numbers"""
+        pass
+
+    def HCF(self):
+        """_summary_: Get the HCF of numbers"""
+        pass
+
+    # class time: # Working with days calculator
+    def age_calculator(self):
+        """_summary_: Get the age of the user"""
+        # This is be very accurate and precise it should include proper leap year and last birthday till now every detail.
+        # Should show the preciseness in seconds when called.
+        pass
+
+    def days_calculator(self):
+        """_summary_: Get the days between two dates"""
+        pass
+
+    def leap_year(self):
+        """_summary_: Get the leap year of the user"""
+        pass
+
+    def perimeter(self):
+        """_summary_: Get the perimeter of the user"""
+        pass
+
+    class Trigonometry:
+        """_summary_: Class enriched with all the methods to solve basic trignometric problems"""
+
+        def pythagorean_theorem(self):
+            """_summary_: Get the pythagorean theorem of the user"""
+            pass
+
+        def find_hypotenuse(self):
+            """_summary_: Get the hypotenuse of the user"""
+            pass
+
+        def find_base(self):
+            """_summary_: Get the base of the user"""
+            pass
+
+        def find_perpendicular(self):
+            """_summary_: Get the perpendicular of the user"""
+            pass
+
+    # class Logarithms:
+    # Learn more about Maths in general
+
+    def quadratic_equation(self):
+        """_summary_: Get the quadratic equation of the user"""
+        pass
+
+    def open_system_calculator(self):
+        """_summary_: Open the calculator present on the machine of the user"""
+        # first identify the os
+        # track the calculator
+        # add a debugging feature like error handling
+        # for linux and mac
+        # if no such found then print a message to the user that sorry dear it wasn't possible to so
+        # then open it
+
     def take_inputs(self):
+        """_summary_: Take the inputs from the user in proper sucession"""
         while True:
             while True:
                 try:
@@ -76,6 +221,7 @@ def take_inputs(self):
         #     exit()  # Some how I need to exit it
 
     def greeting(self):
+        """_summary_: Greet the user with using Audio"""
         text_to_audio = "Welcome To The Calculator"
         self.gtts_object = gTTS(text=text_to_audio, lang="en", tld="co.in", slow=False)
         tts = self.gtts_object
@@ -90,6 +236,7 @@ def greeting(self):
 
     # Here OOP is not followed.
     def user_name(self):
+        """_summary_: Get the name of the user and have an option to greet him/her"""
         self.name = input("Please enter your good name: ")
         # Making validation checks here
         text_to_audio = "{self.name}"
@@ -105,6 +252,12 @@ def user_name(self):
             time.Clock().tick(10)
 
     def user_name_art(self):
+        """_summary_: Get the name of the user and have an option to show him his user name in art"""
+        # Default is to show = True, else False if user tries to disable it.
+
+        # Tell him to show the time and date
+        # print(art.text2art(self.name))
+        # print(date and time of now)
         # Remove whitespaces from beginning and end
         # Remove middle name and last name
         # Remove special characters
@@ -122,6 +275,99 @@ def user_name_art(self):
         # Remove numbers
         # Remove everything
 
+    class unitConversion:
+        """_summary_: Class enriched with all the methods to convert units"""
+
+        # Do we full-stops in generating documentations?
+
+        def __init__(self):
+            """_summary_: Initialise the class with the required attributes"""
+            self.take_inputs()
+
+        def length(self):
+            """_summary_: Convert length units"""
+            # It should have a meter to unit and unit to meter converter
+            # Othe lengths units it should also have.
+            # Like cm to pico meter and what not
+            pass
+
+        def area(self):
+            # This will to have multiple shapes and polygons to it to improve it's area.
+            # This will to have multiple shapes and polygons to it to improve it's area.
+            # I will try to use the best of the formula to do it like the n number of polygons to be solved.
+
+            pass
+
+        def volume(self):
+            # Different shapes and polygons to it to improve it's volume.
+            pass
+
+        def mass(self):
+            pass
+
+        def time(self):
+            pass
+
+        def speed(self):
+            pass
+
+        def temperature(self):
+            pass
+
+        def data(self):
+            pass
+
+        def pressure(self):
+            pass
+
+        def energy(self):
+            pass
+
+        def power(self):
+            pass
+
+        def angle(self):
+            pass
+
+        def force(self):
+            pass
+
+        def frequency(self):
+            pass
+
+        def take_inputs(self):
+            pass
+
+    class CurrencyConverter:
+        def __init__(self):
+            self.take_inputs()
+
+        def take_inputs(self):
+            pass
+
+        def convert(self):
+            pass
+
+    class Commands:
+        def __init__(self):
+            self.take_inputs()
+
+        def previous_number(self):
+            pass
+
+        def previous_operation(self):
+            pass
+
+        def previous_result(self):
+            pass
+
+    def clear_screen(self):
+        # Do I need a clear screen?
+        # os.system("cls" if os.name == "nt" else "clear")
+        # os.system("cls")
+        # os.system("clear")
+        pass
+
 
 if __name__ == "__main__":
     operation_1 = Calculator(10, 5)
@@ -134,3 +380,12 @@ def user_name_art(self):
 
 
 # Let's explore colorma
+# Also user log ins, and it saves user data and preferences.
+# A feature of the least priority right now.
+
+# List of features priority should be planned.
+
+
+# Documentations are good to read and understand.
+# A one stop solution is to stop and read the document.
+# It is much better and easier to understand.