Style A (Back)

The bodice back of this garment has two darts (on the half-block); one dart in the waist, the other in the shoulder.

This bodice is actually a 3-D version of the flat Bodice Block Back that is used on this website.

The style that is created by the Block is called Style A; other styles that are created by moving the shoulder dart are Styles 01-03.

Flat Block vs Technical Flat

Figure 1:  On the left is the Bodice Block Back, with the darts open .  On the right is the Technical Flat of that block; a 3D representation with the dart closed.  The blocks are always shown as half the body, as the basic pattern is symmetrical.