Sequence: Activation Boxes

Using `+` and `-` to show when participants are active.

sequence-activation-boxes.mmd
sequenceDiagram
  participant C as Client
  participant S as Server
  C->>+S: Request
  S->>+S: Process
  S->>-S: Done
  S-->>-C: Response
Output
Sequence diagram, Zombie Mermaid Request Process Done Response Client Server

More Sequence diagram examples