Yes, I was expecting to have to regenerate, but since there are only four fields plus two or three buttons, I wasn't overly concerned. I read about hidden fields in the CGI docs, but couldn't envisage an application. Thanks to you, I can now! :-)

Regards,

John Davies

In reply to Re^2: CGI: which field has changed? by davies
in thread CGI: which field has changed? by davies

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