Alice->Bob: Hello Bob, how are you?
Note right of Bob: Bob thinks
Bob-->Alice: I am good thanks!
Note left of Bob: who are you.
Note over Alice: rencai
Title: abc
A->B: nothing
Note over A: hello
B-->D: no
Note right of D: D is bad
D->> A: ab
Note over A, B: wrong way
graph TB;
A-->B;
A-->C;
A-->E;
E-->F;
pie
title Pie Chart
"Dogs" : 100
"Cats" : 100
"Ducks" : 50
classDiagram
class A{
<<interface>>
}
class B{
<<abc>>
}
A <|--B: implement