Either one variable, or a set of discrete ones would work.
If one variable, let user type in comma separated list. Use Perl to split list into an array and trim whitespace.
If a set of discrete variables, some code to ignore empty entries might be useful.
If one variable, let user type in comma separated list. Use Perl to split list into an array and trim whitespace.
If a set of discrete variables, some code to ignore empty entries might be useful.
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