XSPEC> chatter 10 ! Set the terminal chattiness to 10, same as the initial value.XSPEC> chatter,,0 ! Set the chattiness for the log file to very low. This setting essentially disables the log file output.
XSPEC> chatter 5 ! Make XSPEC very quiet.
XSPEC> chatter 10 25 ! Restore the terminal chattiness to the initial level, while in the log file XSPEC will tell all (particularly when new data files are read in).