Describe hockey breakout D to D to center?

In hockey you have 4 positions. Goalie, Center, Defense and Winger. Defense is frequently refered to as "d". A D to D to center breakout basically means: one defense gains control of the puck and passes it to the other defense (D to D). The center is now "curling" (basically heading up the ice, towards the offenseive end). The defense then passes the puck to the center (D to center).