Hi Paul,
Yes you are right, I confirm that the StockList example does not leverage at all the COMMAND mode subscription; sorry for the misunderstanding.
A good example to refer to for COMMAND mode is the Portfolio Demo.
Please take a look to this
https://github.com/Lightstreamer/Lightstreamer-example-Portfolio-client-javascript and let me know if this better reflects your use case.
Regards,
Giuseppe