role as well, which may explain the Japanese expressions, sayings and codes related to them. One example is (lit. "Tighten the string of the kabuto after winning the war"). This means don't lower your efforts after succeeding (compare to "not to rest on one's laurels"). Also, (lit. "to take off the kabuto") means to surrender. Parts of the kabuto The basic parts of the kabuto include: , a dome composed of overlapping elongated plates called , a small opening at the top of the , usually fitted with a (an ornamental grommet, often resembling a chrysanthemum) , a brim or visor on the front of the , a cloth lining inside the , mounting points for attaching crests , a ring at the back of the for securing a (helmet flag) , wing-like or ear-like projections to the sides of the , a suspended neck guard composed of multiple overlapping lames (chin cord), often used to secure the (facial armour) A typical features a central dome constructed of anywhere from three to over a hundred metal plates riveted together. These were usually arranged vertically, radiating from a small opening in the top. The rivets securing these metal plates to each other could be raised (a form known as ) or hammered flat (a form known as ); another form, called , had the rivets filed flush. Some of the finer were signed by their makers, usually from one of several known families, such as the Myochin, Saotome, Haruta, Unkai, or Nagasone families. A small opening in the top of the , called the or (seat of the war god, Hachiman), was thought to be for passing the warrior's top knot through. Although this practice was largely abandoned after the Muromachi period, this opening may have been retained for purposes of ventilation or simply as an artifact of how the plates were riveted together. The was usually decorated with , which were rings of intricately worked, soft metal bands often resembling a chrysanthemum. and were two helmet forms that did not usually have an opening at the top. incorporated a suspended neck guard called a , usually composed of three to seven semicircular, lacquered metal or oxhide lames, attached and articulated by silk or leather lacing, although some were composed of 100 or more small metal scales in a row. This lamellar armour style, along with (mail armour), was the standard