Question on new NOL carryback rules

[Kram BergGold]

Under the new rules you can elect a 5 year NOL carryback, When you carryback a $100,000 NOL to the fifth year that has $40,000 of taxable income you only get to use $20,000, 50%. So now you have an $80,000 carryforward to year 4. What happens here and in succeeding years?

[Zee]

Any remaining NOL can then be used to fully offset taxable income in the other four carryback years.