The signal SIGTERM is caught. The signal handler for SIGTERM releases all currently used resources and terminates Natural smoothly.

Natural's default signal handlers for SIGBUS, SIGSEGV and SIGILL are only installed if the command gcore (or a script with the same name which supplies gcore functionality on Solaris) is available and if the user running Natural has execution rights for this command. If one of these signal handlers gets control, the handlers that were valid at startup time are restored, gcore is executed and an attempt is made to behave as if the signal SIGTERM was caught.