No. But you can get the contents of the Optional fields for an account and put them on the financial statement, so if you can fit your note into 35, 70 or 105 characters then you can have it displayed when the sheet is expanded.
Alternatively, don't make the account part of a ".Range", but specify it explicitly in the row if you want the same note always displayed.
What are you trying to accomplish?
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Andrew Bates