It is showing in what is called a commented report.   To the right of the balance sheet line in question, I can create a box with a number.  At the bottom of the report, the box with the number I can write in/provide some detail that I want to share.   It is not referred to as a custom report but rather a commented report.   It seems that, in fact, the commented report cannot be duplicated for a new period.  In our case, the comments would not have changed nor would the line items on the report so this would have avoided some duplication of effort.