#slow 1: means when the server give 1 response (net packet),
the client will send one more commands. (Compare to zmud,
zMud need users' action to determine if the client will continute
to send more commands, but in yTin, this is done automatically,
although the server response might not be what was generated
by user's last command, in most case it is much easier to
use and sufficient).
#slow 5:
will send 5 command from queue when sever gives 1 response.
The benefit is: when net is lag, it sends
commands much faster than #slow 1, which is very like zmud's
behavior.