1. The Y Programming Language
2. Prerequisites
3. 1. Language Basics
4. 1. 1.1. Variables
   2. 1.2. Data Types
   3. 1.3. Operators
   4. 1.4. Comments
   5. 1.5. Control Structures
   6. 1.6. Expressions
5. 2. Data Structures
6. 1. 2.1. Arrays
   2. 2.2. Structs
7. 3. Functions and Methods
8. 1. 3.1. Functions
   2. 3.2. Lambdas
   3. 3.3. Methods and Instances
9. 4. Advanced Features
10. 1. 4.1. Constants
    2. 4.2. Declarations
    3. 4.3. Type Annotations
11. 5. Language Reference
12. 1. 5.1. Grammar Reference
    2. 5.2. Operator Precedence
    3. 5.3. Built-in Types
13. 6. Implementation
14. 1. 6.1. Foundation Concepts
    2. 6.2. Literals and Types
    3. 6.3. Variables and Memory
    4. 6.4. Operations
    5. 6.5. Functions
    6. 6.6. Control Flow
    7. 6.7. Data Structures
    8. 6.8. Advanced Constructs
    9. 6.9. Comprehensive Examples