flowchart LR classDef activity fill:#AFDAFD,stroke:#6c8ebf,stroke-width:2px,color:#000880 classDef doc fill:#0565b3,stroke:#6c8ebf,stroke-width:2px,color:#ffffff 51@{ shape: doc, label: "رسید پرداخت"} class 51 doc 89@{ label: "O2.6 پردازش پرداخت"} class 89 activity 90@{ label: "O2.7 ارسال سفارش"} class 90 activity 89 --> 51 51 --> 90