iii_table_of_contents.md

i. Preface

ii. Introduction

iii. Table of Contents

1. The Basic Parts
   • the Base
   • the Cells
   • the Lines
   • the Slopes
2. The Boundaries
   • the Borders
   • the Edges
   • the Corners
3. The Special Regions
   • the Center of a Line
   • the Center of a Square
   • the Two Diagonal Lines
4. The Directions of Traversal
   • the Current Position
   • the Horizontal and Vertical Directions
   • the Diagonal Directions
5. The Symmetry
   • the Bisection of a Line
   • the Opposite Cells in a Line

iv. Conventions