> I want to constrain the input values for a string field to be either the
words "cancel" or "nocancel".
> REBOL has excellent support for forcing a function argument to be date!,
time!, string!, but I want to increase the restrictions for a particular
field and have it throw an error on spurious input.
> Must I homebrew something or did I overlook the built-in support for this?
Change your design. Use two Radio buttons in Rebol/View.
Andrew Martin
ICQ: 26227169
http://members.xoom.com/AndrewMartin/
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