Contents

## delete line

 1  ~~this is not available now~~ 

this is not available now

## superscript

use [^keyword]

 1 2 3  for this reference[^footnote] and this[^footnote2] 

for this reference1

and this2

$inline： formula using $E=mc^2$ for$E=mc^2$block equation using $$...$$ or \$...\$  1 2 3  $$f(x_1,x_x,\ldots,x_n) = x_1^2 + x_2^2 + \cdots + x_n^2$$ $$\sum^{j-1}_{k=0} \widehat{\gamma} z_k$$  $$f(x_1,x_x,\ldots,x_n) = x_1^2 + x_2^2 + \cdots + x_n^2$$ $$\sum^{j-1}_{k=0} \widehat{\gamma} z_k$$  1 2 3  $$c = \pm\sqrt{a^2 + b^2}$$ \$f(x)=\int_{-\infty}^{\infty} \hat{f}(\xi) e^{2 \gamma i \xi x} d \xi \$  $$c = \pm\sqrt{a^2 + b^2}$$ $f(x)=\int_{-\infty}^{\infty} \hat{f}(\xi) e^{2 \gamma i \xi x} d \xi$ visit Katex ## chemical equation mhchem is supported in$ \KaTeX $ 1 2 3 4 5  $$\ce{2 CO + O2 -> 2 CO2}$$ $$\ce{Hg^2+ ->[I-] HgI2 ->[I-] [Hg^{II}I4]^2-}$$ $$C_p[\ce{H2O(l)}] = \pu{75.3 J // mol K}$$  $$\ce{2 CO + O2 -> 2 CO2}$$ $$\ce{Hg^2+ ->[I-] HgI2 ->[I-] [Hg^{II}I4]^2-}$$ $$C_p[\ce{H2O(l)}] = \pu{75.3 J // mol K}$$ ## enhanced code block code highlight  1  $ sudo apt-get install vim-gnome 

Python ：

python
@requires_authorization
def func(param1='', param2=0):
'''A docstring'''
if param1 > param2: # interesting
print 'Greater'
return (param2 - param1 + 1) or None

class SomeClass:
pass

>>> message = '''interpreter
... prompt'''


  1 2 3 4 5 6 7 8 9 10 11 12  @requires_authorization def func(param1='', param2=0): '''A docstring''' if param1 > param2: # interesting print 'Greater' return (param2 - param1 + 1) or None class SomeClass: pass >>> message = '''interpreter ... prompt''' 

JavaScript：

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18  /** * nth element in the fibonacci series. * @param n >= 0 * @return the nth element, >= 0. */ function fib(n) { var a = 1, b = 1; var tmp; while (--n >= 0) { tmp = a; a += b; b = tmp; } return a; } document.write(fib(10)); 

## flowchart

### example code

  1 2 3 4 5 6 7 8 9 10 11  flow st=>start: Start:>https://www.zybuluo.com io=>inputoutput: verification op=>operation: Your Operation cond=>condition: Yes or No? sub=>subroutine: Your Subroutine e=>end st->io->op->cond cond(yes)->e cond(no)->sub->io 

visit：flowchart grammar

## sequence

### Ex 1

 1 2 3 4  sequenceDiagram Alice->Bob: Hello Bob, how are you? Note right of Bob: Bob thinks Bob-->Alice: I am good thanks! 

### Ex 2

 1 2 3 4 5 6  sequenceDiagram Title: Here is a title A->B: Normal line B-->C: Dashed line C->>D: Open arrow D-->>A: Dashed open arrow 

vist：seq diagram

## gant diagram

timeline diagram

  1 2 3 4 5 6 7 8 9 10 11 12 13 14  gantt title project section a procedure b :a1, 2016-06-22, 3d procedure c :after a1, 5d procedure d : 5d section b procedure e :2016-07-05 , 5d procedure f :2016-07-08, 10d procedure g :2016-07-15, 10d procedure h :2016-07-22, 5d section end a: 2d b: 3d 

visit：gant diagrams

## mermaid flowchart

 1 2 3 4 5  graph LR; A[Hard edge] -->|Link text| B(Round edge) B --> C{Decision} C -->|One| D[Result one] C -->|Two| E[Result two] 

Mermaid flowchart

## mermaid diagram

 1 2 3 4   Alice->John: Hello John, how are you? loop every minute John-->Alice: Great! end 

visit：Mermaid diagram

## table

 1 2 3 4 5   | item | price | number | | -------- | -----: | :----: | | pc | $1600 | 5 | | phone |$12 | 12 | | other | $1 | 234 |  item price number pc$1600 5
phone $12 12 other$1 234

## definition

 1 2 3 4 5  name 1 : def 1 (four leading space after :) codebloc 2 : def 1 (four leading space after :) 
name 1
def 1 (four leading space after :)
codebloc 2
def 1 (four leading space after :)
 1   code block（left eight leading space） 
    code block（left eight leading space）


## Html lable

  1 2 3 4 5 6 7 8 9 10 11 12 13  
a b c d
1 2 3

a b c d
1 2 3

## Todo list

use [ ] or [x] with nested Markdown

  1 2 3 4 5 6 7 8 9 10 11   - [ ] **Markdown** - [ ] a - [ ] b - [x] c [see also](https://github.com/blog/1375-task-lists-in-gfm-issues-pulls-comments) - [x] e - [x] f - [x] c [see also](https://github.com/blog/1375-task-lists-in-gfm-issues-pulls-comments) - [ ] **another one** - [ ] item 1 - [ ] 2 - [x] 3 

Todo list：

• Markdown

• another one

• item 1
• 2
• 3

1. This is the first footnote ↩︎

2. This is the second footnote ↩︎