| A signboard 
      placed outside or affixed to the front of a commercial premises displaying 
      the name of the shop yagou 屋号, and the nature of the business. Special 
      variants in the case of theaters gekijou 劇場, might display the plays 
      currently being performed. Kanban appear to have developed in Japan 
      during the Edo period, for there are none in the late Muromachi illustrations 
      of urban scenes (such as the *rakuchuu 
      rakugai-zu 洛中洛外図). Instead curtains *noren 
      暖簾, in shop entrances were used to identify merchants' houses *machiya 
      町家 at that time. Sometimes the sign was applied directly to an architectural 
      element, such as a projecting gable parapet *udatsu 
      卯立 or the box holding the rain doors *tobukuro 
      戸袋, but the simplest Edo period, kanban were wooden boards with characters 
      painted or incised on them, which were suspended from the eaves of either 
      the main roof or the front roof *hisashi 
      廂, parallel or at right angle to the facade, or mounted on the hisashi 
      roof. Sometimes the board was given a decorative outline, related to the 
      nature of the business: a pot for a vinegar manufacturer, or a comb for 
      a comb-maker. In the latter half of the Edo period, more elaborate kanban 
      developed, taking the form of small roofed structures yakata 屋形, 
      and using elements of architecture usually associated with temples or shrines, 
      such as bracket systems *tokyou 
      斗きょう and cusped gables *karahafu 
      唐破風. These reflect the increasing prosperity of the merchant class. A more 
      abstract form of kanban were the balls of cedar needles sugidama 
      杉玉, suspended from the eaves of sake 酒 breweries sakaya 酒屋. 
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