I think the poster is talking about re-deposits and how, recycled, that can end up being a multiple of what is deposited.

Example: you deposit $1000 in a bank with 10% reserve policy ($100 set aside as capital reserve of the bank).

Bank loans out $900 to customer for new office furniture; then that money is used to pay the office store, which is another depositor at the bank - which then counts as another deposit, 10% of which is set aside as reserve ($90). Another loan of $810 is then made, etc.