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

npm install --save hexo-filter-sequence

sequence:
  # webfont:     # optional, the source url of webfontloader.js
  # snap:        # optional, the source url of snap.svg.js
  # underscore:  # optional, the source url of underscore.js
  # sequence:    # optional, the source url of sequence-diagram.js
  # css: # optional, the url for css, such as hand drawn theme 
  options: 
    theme: 
    css_class: 

npm install --save hexo-filter-flowchart

flowchart:
  # raphael:   # optional, the source url of raphael.js
  # flowchart: # optional, the source url of flowchart.js
  options: # options used for `drawSVG`

st=>start: Start|past:>http://www.google.com[blank]
e=>end: End:>http://www.google.com
op1=>operation: My Operation|past
op2=>operation: Stuff|current
sub1=>subroutine: My Subroutine|invalid
cond=>condition: Yes
or No?|approved:>http://www.google.com
c2=>condition: Good idea|rejected
io=>inputoutput: catch something...|request

st->op1(right)->cond
cond(yes, right)->c2
cond(no)->sub1(left)->op1
c2(yes)->io->e
c2(no)->op2->e