HP Guardian Errors Manual page 18

Each description of a trap or signal condition contains the following information:
The signal name or trap number
The cause of the trap or signal
The effect of the error on the system
The recovery actions you can take
You can use the ARMTRAP procedure to specify a location in your application program where
execution should begin if a trap occurs. Your program can use information passed to investigate
the cause of the error. You can even reset the trap mechanism and cause the program to restart.
Use of the ARMTRAP procedure and user-written trap processes is documented in the Guardian
Programmer's Guide.
18 Introduction