To support extraction/substitution of multiple sensitive information values, so that it is clear where to sub back in the data, and so that someone couldn't modify a field to a value of MASKED, and have the actual masked values substituted back to be visible.
To support extraction/substitution of multiple sensitive information values, so that it is clear where to sub back in the data, and so that someone couldn't modify a field to a value of MASKED, and have the actual masked values substituted back to be visible.