Canon BJC-S830D User Manual page 80

Always start the same application
When you select this item, 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 the Change... or Change the
application... button 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 80