Carty,
It stands for 'Dose Adjustment for Normal Eating'.
Basically, it is a course for adults with type 1 to show them how to adjust insulin to match the carbs in your meal. It learns and teaches you to count carbs correctly and adjusting insulin so that blood glucose levels remain stable pre/post meal times. It involves working out insulin to carb ratio's, as many, including myself have a different ratio throughout the day, i.e I need less insulin on a morning that I do at night to match the same amount of carbs.
Hope this is helpful!
Nigel
it