Storing 256 zero bits would be inefficient if they were mostly unused. The lease expired if the land was unused. As of 2010, the lot had been mostly unused and empty. Thus, any large areas of unused memory are wasted. Obsolete and normally unused kana are shown in brackets and . This uses extra video memory that is normally unused. They allowed use of unused frozen embryos. No deductions are permitted except for refunds of unused music due to technical faults. Cards that are unused in the entire year are not chargeable. Macroautophagy is the main pathway, used primarily to eradicate damaged cell organelles or unused proteins. The two following bits are typically unused, and driven low. They accomplish this by overwriting unused areas of executable files. Holding unused TTL inputs low consumes more current. Later process schemes made recycling unused ammonia and carbon dioxide practical. OEM policies for refunding unused Windows licenses vary.