It doesn't restrict anything. That is the effect of the “For greater certainty...”. What we're really trying to do through this provision is to express that existing rules and existing law pertaining to use and further sharing of information continue to apply as they are. Therefore, the subsequent sharing of information for any purpose to any person would need to occur in accordance with the law.
These rules can be found in statutes specific to an activity, or they can be found in cross-cutting statutes such as the Privacy Act. Also, the charter continues to apply.
Therefore, the effect is that we're not changing the law pertaining to use or further disclosure. We're stating that it needs to occur under existing law, as it currently occurs.