Canon BJC-S820D User Manual page 79

Always start the same application.
When you select this option, the system always starts same application
regardless of the type of data stored on the memory card.
Note
To change the application to be started, click Change the application in
the Auto-Start Properties dialog box, and select the application to be
started.
Using the Memory Card Utility (Macintosh)
Setting the Application to Be Started 79