1. Source file basics

1**.1 File name**

1.2 Source File encoding

1.3 Import file

2. Folder basics

2-1. Folder name

3. Code Layout

3-1. Indentation

3-2. Tabs or Spaces

3-3. Blank Lines

3-4. Source File Encoding

3-5. Imports

3-6. Order of Functions

3-7. Whitespace in Expressions

3-8. Control Structures

3-9. Function Declaration