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@@ -4,14 +4,6 @@
   1. [Introduction](#introduction)
   2. [Variables](#variables)
   3. [Functions](#functions)
-  4. [Objects and Data Structures](#objects-and-data-structures)
-  5. [Classes](#classes)
-     1. [S: Single Responsibility Principle (SRP)](#single-responsibility-principle-srp)
-     2. [O: Open/Closed Principle (OCP)](#openclosed-principle-ocp)
-     3. [L: Liskov Substitution Principle (LSP)](#liskov-substitution-principle-lsp)
-     4. [I: Interface Segregation Principle (ISP)](#interface-segregation-principle-isp)
-     5. [D: Dependency Inversion Principle (DIP)](#dependency-inversion-principle-dip)
-  6. [Don’t repeat yourself (DRY)](#dont-repeat-yourself-dry)
 
 ## Introduction