These are described as ledger lines. In theory, you can use several ledger lines in a sort of stack, but in practice, we only tend to use a few at a time, otherwise it can become difficult to read.

The bass clef adopts very similar properties, but the notes are slightly different; the line note-names are G-B-D-F and A, and as a rhyme, you could try ‘Good Burritos Don’t Fall Apart ...

1st Commercial Credit, LLC, a national leader in accounts receivable financing, trade payable finance, and invoice factoring, announces the launch of its new Ledger Lines program—providing ...

New Ledger Lines program—providing revolving credit facilities from $3 and up to $20 million. With Ledger Lines, businesses generating at least $3 million in monthly invoices can access up to 90 ...