A note on the D string
An up stroke!
Also, for the record, someone responded to post remarking the speed of Angelo Debarre's version of la Gitana. They said that such speed is made possible by the "rest stroke" technique. Well look, that's not exactly the case. That speedy lick is played with standard alternate picking which just so happens to be exactly the same as the rest stroke technique on that particular passage. There is no difference whatsoever. There are many other examples where the efficiency of the gypsy rest stroke is, in fact, a cool technique that allows for more efficient and speedy picking than alternate picking. But that passage of la Gitane is not one of them.