Darnia is doing is called a "dirty" float.
A dirty float is a floating exchange rate where a nation's national bank infrequently intercedes to alter the course or the pace of progress of a nation's money esteem. In many occurrences, the national bank in a dirty float system goes about as a cradle against an outside monetary stun before its belongings wind up troublesome to the local economy. A dirty float is otherwise called a "managed float."
A dirty float system isn't viewed as a genuine skimming swapping scale in light of the fact that, hypothetically, genuine floating rate systems don't take into consideration intervention.