Oyster discounted daily price capping - Railcards

Taken from www.tfl.gov.uk/tickets/faresandtickets/singlefares/6769.aspx:

"If you hold a National Rail Railcard, you can get an Oyster card and have the Railcard discount entitlement loaded on to it. You can then use Oyster to pay as you go at adult-rate, but your off-peak Oyster daily price cap will be 34% lower than the equivalent adult-rate cap.

Holders of the following National Rail Railcards can benefit from the discounted daily price capping:

• Disabled Persons
• HM Forces,
• Senior
• Young Persons.

You will need to get an Oyster card and have your Railcard discount concession loaded on it."