This is a continuation of the pattern drafting system Ecole de Guerre-Lavigne from Paris.
Start with the collars drafted on a rectangle (band collar, shirt collar, peter pan), then continue on to a V-neck collars. Under this section we start with the "rules" surrounding V-Necklines, then cover the collars that set onto the neckline, such as the all-in-one collars, and the insertion collars.
Finally we go to the "semi-collars," collars that don't set into a classic V-neckline or round neckline.
