The xboard command "nps" does not work:
admin@localhost:~$ gnuchess --xboard
Chess
nps 100000
TimeLimit[0] = 0
TimeLimit[1] = 0
Invalid move: nps 100000
exit
TimeLimit[0] = 0
TimeLimit[1] = 0
admin@localhost:~$
Is this an error, or is the command unsupported?