A process executes any routines registered in its exit list (with DosExitList) after the Process Termination exception has been delivered to each thread in the process and after each thread except Thread 1 has finally been terminated. If a thread handles the process termination exception, it must eventually voluntarily terminate, or the exit-list sequence will not finish running properly. Threads must not use DosCreateThread, DosExecPgm, DosStartSession, or DosExit when they are delivered a process termination exception.