"Thomas de Groot" <tDOTdegroot@interDOTnlANOTHERDOTnet> wrote:
> In my experience, whatever the macro does, if it is intended to give always
> the same output, it is always more efficient to keep either macro or its
> output out of the while loop, but inside a union for instance. Otherwise it
> would not make too much difference (except maybe if the macro is very
> large)...

Thanks, Thomas.  In light of what Tor said, I had a mistaken idea of what was
happening when #declaring a pre-made macro. It all makes sense now (hopefully!)

Ken

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