You can also render sequence diagrams like this:
Alice->Bob: Hello Bob, how are you?
Note right of Bob: Bob thinks
Bob-->Alice: I am good thanks!
And flow charts like this:
st=>start: Start
e=>end
op=>operation: My Operation
cond=>condition: Yes or No?
st->op->cond
cond(yes)->e
cond(no)->op
Note: You can find more information:
- about Sequence diagrams syntax [here][7],
- about Flow charts syntax [here][8].