* Frank Adam writes to All, on Saturday August 17 1996
   at 04:57:

 FA> Does passing a pointer to a function effect performance, as opposed to
 FA> having the contents of said pointer global or local ?

Don't quite understand this one. Do you mean storing the return value in a
global variable?

 FA> Also, does re-entrancy mean, that one can have multiple instances of
 FA> a function/program ?  Yep, still trying to learn the right
 FA> terminology.

Re-entrancy means you can call the procedure while it's already in the
middle of being executed, without clobbering all your variables. Some
things such as sorts and expression evaluators work best when done
recursively like this, and usually need plenty of stack (local variable)
space as a result.

Cheers.

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