In general, it's better to use Name Expression instead of Macro Substitution but ther're exceptions. You may find following threads about macro substitution interesting
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Re: Macro substitution Thread #
735756 -
Re: Macro Substitution - Epilogue Thread #
736706 <snip>
>Moreover, if you don't mind could you explain me the differences between eval() and &, and how to choose between the two.
>
--sb--