Bat Sounds/Phonology Redux

So, some of you may recall my post some weeks ago about bat sounds and
phonology.  I got lots of help, but now another thought has occurred to
me.  Clicks.  Assuming that intelligent beings evolved from bats would
retain their sonar, clicks would, I think, be part of their language.
So, now, I'm trying to figure the best way to represent them.
I'm sure there is at least one African language that has clicks, but I
can't remember how they're displayed.  I was thinking either, " * " or "
! " or possibly even, " ¡ ".  Suggestions?

Thanks,
Jim
--
"It's better to light one candle
   than to curse the darkness."
-Chinese Proverb and The Motto of the Christophers
                      http://www.christophers.org

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