Because the board has a copy of the sealed records in its possession, the open question is the extent to which the board can use the records in its enforcement proceeding. The defendant's position is that, so long as the board did not "publish[ ]" the sealed charges, it otherwise could reference and rely on them. In the appeal before us, the defendant moved to supplement the appellate record by including documents that substantiated his claim that he consistently has taken that position (thereby rebutting insinuations by the board that he was pursuing sealing in order to interfere with its enforcement). Because those documents were not before the judge, the defendant's motion is denied. In resolving this case, we are not relying on the defendant's representations that the board could use the April 1997 charges in any enforcement proceedings. Nor are we reaching the board's claim that it qualifies as one of the "criminal justice agencies" authorized to use sealed criminal records pursuant to G. L. c. 276, § 100D. Finally, we do not address when, if ever, parties other than "criminal justice agencies" could gain access to sealed criminal records. Instead, we leave to another day resolution of any such issues.