Hey Sam, I figured it out. In the Handspring manual, I looked it up,
and I guess it's explained like this:
Section II - 16, DkManual.pdf, 1999:
Whenever a module is inserted and after copying and executing the Module
setup application (if present), the system looks for a welcome application
on the module. This application is a normal PalmOS application with a
database name of "CardWelcome." If this application is found, the OS
automatically switches to it.
There's a bit more on this as well.
-Rus
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