示例代码
# UML
时序图
sequence Title:
==连接建立的过程==
==客户主机==`-\>`==服务器主机==`:` ==连接请求(==`SYN=1,seq=client_isn`==)==
==服务器主机==`-\>`==客户主机==`:` ==授予连接(==`SYN=1,seq=client_isn`==)==`\n ack=client_isn+1`
==客户主机==`-\>`==服务器主机==`:` ==确认(==`SYN=0,seq=client_isn+1`==)==
\n ack=server_isn+1