Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Example of a process model for the workflow of requesting refunds to tickets represented as a Petri net process model. The squares in the graph denote transitions representing activities, and the circles denote places representing states in the workflow
