Latest Palm WebPro 3 user agents:

User Agent	Platform	Device
Mozilla/5.0 [en] (PalmOS; U; WebPro/3.5; Palm-Zi72)	palmOS	Zi72
Mozilla/4.76 [en] (PalmOS; U; WebPro/3.0.1a; Palm-Arz1)	palmOS	Arz1