>>I thought there was a quick way to find out - without a loop or error handling - whether a certain index tag existed, but I can't remember it.
>
>TAGNO() ?
Thanks, that was it.
It is difficult to find in the help; at least, it doesn't appear under "See also". Probably because it is marked "for compatiblity", but it is still a very useful command.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)