I later learned that this problem was caused by the fact that I did not have the Santa Clara County map loaded. This makes it even more difficult to fit the maps you need into the available memory on a Palm. Once you have your maps loaded you can use them in Map Companion. These are the only hard coded keys in the program with all other functions performed using the stylus and menus. Detail is automatically adjusted as you zoom in.
Road names rotate to match the road which is nice.
Zoom is fast and so is panning. Panning can be done automatically by the gps or if you prefer, or are not using a gps you can do it manually. Here we come to an heavily used stylus. Touch the stylus to a point on the screen and it will pan to center. Hold is a little longer on a spot and it will bring up a menu.