TealAlias generates and manages small stub applications that function like Windows "shortcuts" (Mac "aliases"). The aliases allow you to run many applications and data files from the card, even if those applications normally expect all their data to be in main memory.
When you run an alias, it copies an application and an optional list of data files from a card into main memory, and then launches the application. When you exit the application, changes you've made to the data files are optionally copied back to the card and the temporary files are deleted. For more information, please refer to the TealAlias manual.