Flag each use of a numeric literal in an index expression, and in any circumstance except for the following:
This rule may have the following parameters for the +R option:
If no parameters are set, the maximum unflagged value is 1.
The last specified check limit (or the fact that there is no limit at all) is used when multiple +R options appear.
The -R option for this rule has no parameters. It disables the rule but retains the last specified maximum unflagged value. If the +R option subsequently appears, this value is used as the threshold for the check.