This might not be a breakthrough design, but it is a well-thought out feature in the program. Preview will give one a whole view of an image larger than the Palm screen, by shrinking it to fit the screen size. Tapping on the image then would bring you to the actual image where you could view the entire picture by dragging it in any direction with your stylus. To return to the homepage of FireViewer, just tap on the screen for the menu and click Home. Coming now to the functionality of the menu.
Options give one ability to open location, preferences, assign image buttons and purge the cache.
Open location is actually useful only for Palm handhelds with a modem. Using the open location option, one can navigate through server-based documents by using images maps and hyperlinks. Next, the assign image button is indeed, I would say useful. The other option, Purge Cache is useful for deleting all the pictures from the handheld at once. However, when experimenting with it, I noticed that after purging the cache, the image records would still be there.