iOS Crash文件的解析（一）
Andrew->China: Says Hello
Andrew->China: Says Hello1
Note right of China: China thinks\nabout it
China-->Andrew: How are you?
Andrew->>China: I am good thanks!
Title: Here is a title
A->B: Normal line
B-->C: Dashed line
C->>D: Open arrow
D-->>A: Dashed open arrow
st=>start: 开始
e=>end: 结束
op=>operation: 我的操作
op1=>operation: My Operation
sub1=>subroutine: My Subroutine
cond=>condition: 确认？
st->op->op1->cond
cond(yes)->e
cond(no)->op
st=>start: 预约|past:>http://www.google.com[blank]
e=>end: 结束:>http://www.google.com
op0=>operation: 选择桌型和时间段|past
op1=>operation: 预约信息提交|past
op2=>operation: Stuff|current
op3=>operation: 登陆|current
sub1=>subroutine: My Subroutine|invalid
cond=>condition: 登陆|approved:>http://www.baidu.com
c3=>condition: 数据合法|rejected
c2=>condition: Good idea|rejected
io=>inputoutput: catch something...|request
st->cond
cond(yes, right)->op0(right)->c3(right)
cond(no)->op3
c2(yes)->io->e
c2(no)->op2->e
c3(yes)->op1
c3(no)->op0(right)
