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					Originally Posted by A. G. Maisey
					
				 
				Here is an image of what I know as a cis. 
 
There is considerable variation in form, but they all resemble either an angkus, or a harpoon.
  
			
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 Dear Alan, 
I am very interested in knowing more on cis. Is this (pls see the pictures) also a cis? Where can I find the reference, that such form is a cis? I've tried to search in books, and also other source, but didnt find any clue...
Ganjawulung