I'm having a bit of difficulty trying to figure out how to use the global
array.  What I want to do is define the value of x0 as the channel number
then use yx for a variable to do actual work so that folks running a script
at the same time aren't overwriting each other's variable values (yep, I've
seen it happen).  What *ought* to happen is that a user on channel 1's
variables are y1 and z1 while a user on channel 2's variables are y2 and z2,
and so on.  Any ideas?