How does use of edge play into extended tessts?
If you've rolled your dp five times, and tehn expend a point of edge, do you get to reroll all the failured from all the rolls?
Conversely, if you add edge into the roll before hand, do you get to roll the extra dice everytime you roll your dp?
Of course this only applies in cases where gm's limit the number of times you can roll your dp (usually limited to skill number of times or dp number of times.) So if you don't limit the number of times a person can rol their dp it's less relevant.