Redaction tool

Recently I was using the Redaction Tool and accidentally highlighted some words not meant to redact.  I did not click apply but ended yo closing the document and re-opening it again.

if it had the undo feature, I could have made the correction and completed the task in less time.

Does the Redaction Tool have an "undo" component and if so where is it located?   or is the only way to undo something that was accidentally highlighted for redaction is to close the document and reopen it as I did above?