@@ -1,4 +1,4 @@
-# Use Functions and Methods to Build Fitness and Callbacks
+# Use Functions, Methods, and Classes to Build Fitness and Callbacks
 
 In PyGAD 2.19.0, it is possible to pass user-defined functions or methods to the following parameters:
 
 
@@ -40,11 +40,11 @@ Parallel processing, batch fitness, reusing fitness, and non-deterministic probl
 Print a Keras-like summary and log the outputs.
 :::
 
-:::{grid-item-card} User-Defined Functions and Callbacks
+:::{grid-item-card} User-Defined Functions, Methods, and Classes
 :link: custom_functions
 :link-type: doc
 
-Pass your own functions or methods for the fitness and callbacks.
+Pass your own functions, methods, or classes for the fitness and callbacks.
 :::
 
 ::::
 
@@ -470,8 +470,8 @@ Release Date 8 April 2023
   6. The `pygad.visualize.plot` module has a class named `Plot` where all the methods that create plots exist. The `pygad.GA` class extends this class.
   7. Support of using the `logging` module to log the outputs to both the console and text file instead of using the `print()` function. This is by assigning the `logging.Logger` to the new `logger` parameter. Check the [Logging Outputs](https://pygad.readthedocs.io/en/latest/logging.html#logging-outputs) for more information.
   8. A new instance attribute called `logger` to save the logger. 
-  9. The function/method passed to the `fitness_func` parameter accepts a new parameter that refers to the instance of the `pygad.GA` class. Check this for an example: [Use Functions and Methods to Build Fitness Function and Callbacks](https://pygad.readthedocs.io/en/latest/custom_functions.html#use-functions-and-methods-to-build-fitness-and-callbacks). https://github.com/ahmedfgad/GeneticAlgorithmPython/issues/163
-  10. Update the documentation to include an example of using functions and methods to calculate the fitness and build callbacks. Check this for more details: [Use Functions and Methods to Build Fitness Function and Callbacks](https://pygad.readthedocs.io/en/latest/custom_functions.html#use-functions-and-methods-to-build-fitness-and-callbacks). https://github.com/ahmedfgad/GeneticAlgorithmPython/pull/92#issuecomment-1443635003
+  9. The function/method passed to the `fitness_func` parameter accepts a new parameter that refers to the instance of the `pygad.GA` class. Check this for an example: [Use Functions and Methods to Build Fitness Function and Callbacks](https://pygad.readthedocs.io/en/latest/custom_functions.html#use-functions-methods-and-classes-to-build-fitness-and-callbacks). https://github.com/ahmedfgad/GeneticAlgorithmPython/issues/163
+  10. Update the documentation to include an example of using functions and methods to calculate the fitness and build callbacks. Check this for more details: [Use Functions and Methods to Build Fitness Function and Callbacks](https://pygad.readthedocs.io/en/latest/custom_functions.html#use-functions-methods-and-classes-to-build-fitness-and-callbacks). https://github.com/ahmedfgad/GeneticAlgorithmPython/pull/92#issuecomment-1443635003
   11. Validate the value passed to the `initial_population` parameter.
   12. Validate the type and length of the `pop_fitness` parameter of the `best_solution()` method.
   13. Some edits in the documentation. https://github.com/ahmedfgad/GeneticAlgorithmPython/issues/106
Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-# Use Functions and Methods to Build Fitness and Callbacks`
	`1`	`+# Use Functions, Methods, and Classes to Build Fitness and Callbacks`
`2`	`2`
`3`	`3`	`In PyGAD 2.19.0, it is possible to pass user-defined functions or methods to the following parameters:`
`4`	`4`