MemoryMassager - The prime purpose of this is to call a garbage collection in your Newton's memory. In theory, such a garbage collection should get rid of all the dross hanging around, and you may find that this staves off the need to restart from time to time (when using version 1.02 of the Newton OS). It incidentally includes information about free and total memory, battery power, and battery compartment temperature, all of which are available in other tools on the Newton. However, try tapping on the temperature bar... Everything else should be self-explanatory.