markdown common syntax and use

A blank title #

Subheadings ## spaces

1. Digital. Spaces
5. • + Space
   • - Space
   • * Space
   • shift tab rollback level

	// ```编译语言 js
		

Hyperlinks Baidu

// [name] (the path)

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wwww bold ** **

www italics * *

crtl + / mode enters source

• 斜体   * *
  

crtl + / mode enters source