Usage:
/SIGNAL [sig]
Sends signal sig to the tf process, or with no arguments, /signal lists all valid signal names. Valid signals usually include: HUP, INT, QUIT, KILL, SEGV, TERM, USR1, USR2, and TSTP. The complete list varies from system to system.
See: signals, /suspend, getpid(), hooks (SIGHUP, SIGTERM, SIGUSR1, SIGUSR2)