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Ken Sallot[SMTP:kens@uf*.ed*] writes on Sunday, December 03, 1995 4:36 PM

>> When you get back to the T, there are two sets of lines with arrows 
pointing away from you (i.e. "This way is out"). Which one do you take? <<

I hope I'll never have to face that situation.  

I would take a clothpin and mark the line that I'm just returning on (so that I
don't get even more confused). If I have no other indication/memory of which way
is out, I'd probably invest a minute or two to swim a short distance into either
of the two tunnels, turn around and come back to the "T". Doing that should make
me realize the "blind" nature of the "T" from one of the two tunnels and help me
identify which one I came from.

Frankly, I would hope that I would have the discipline in an UNFAMILIAR system
to stick close enough to the line and backreference more frequently, so that I
would either discover (or learn from others) where the "T"s and jumps are and
where which leads to.

Andy

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