Info on Control Destination on the JMS Consumer Snap

I’m having a hard time learning more about the Control Destination on the JMS Consumer snap. Its defined in https://docs-snaplogic.atlassian.net/wiki/spaces/SD/pages/1838404/JMS+Consumer as “Required. The JNDI lookup name of the control JMS destination. Note: This destination is used to fetch control JMS messages to stop this JMS consumer from fetching regular JMS messages.” although I don’t believe its “Required”. Where is there info on how it works and what to send to it to control the consumer?