Function to determine whether an index tag is a candidate index tag.
CANDIDATE([<expN1>][,<expN2> | <expC>])
The CANDIDATE() function is used to determine whether an index tag is a candidate index tag. The number of the index tag to be examined can optionally be specified in <expN1>. If <expN> is not specified, the CANDIDATE() function will operate on the master index tag of the currently active table. If the tag number, <expN>, is specified, the CANDIDATE() function can be used on tables other than the currently active table by specifying either the relevant workarea number, <expN2>, or the alias name of the table, <expC>.
NOTE: A candidate index tag is an index tag that is a likely candidate to become the primary index tag as it does not contain any null or duplicate values.
if tagcount() > 0 for i = 1 to tagcount() ? "Candidate status for " + tag() + " is " + ltos(candidate(i)) next endif