Originally posted by
Jim Sachs:
The [ and ] keys switch from the tank with the crystal in it to the tank with the elephant-ear coral.
Thanks Jim - but it doesn't do it if the exit on mousemove is checked - see Edgars post below. If the exit on mousemove is checked, hitting [ or ] or Ctrl-B or Ctrl-W just exits the program.
I think that's a bug.