Universal File Dialogâ„¢ is a complete tool for developers to integrate into their applications. UFD gives a unified way of prompting the user for a file selection. UFD consists for two dialogs. The Open File and Save File dialogs. The Open File dialog is used to prompt for a file to open. The Save File dialog is used to prompt for a file to save as. UFD is compatible with external cards such as Compact Flash, Memory Stick and SD/MMC.