>An independent cursor would be OK, since I can throw it away once the user has input into the fields their selection criteria. Can I COPY STRUCTURE on an existing cursor, or do I have to re-define all the fields when I CREATE CURSOR?
>
>Thanks.

You can AFIELDS() structure into array and then CREATE CURSOR ... FROM ARRAY ...
But again, remember that committing this way you will have to write your own programmatic table update.