"C<0=5  2>9=K  ?0405B  =0  B5  <5AB0,   GB>  1K;8  8AA;54>20=K,   =>  2  40==K9  <><5=B  =5  =0E>4OBAO  2  < l i n k = " t o p i c : l i n e   o f   s i g h t " > ?>;5  7@5=8O< / l i n k >   20H8E  >B@O4>2. 
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 "C<0=  2>9=K  A2O70=  A    < l i n k = " t o p i c : b l a c k   m a p " > G5@=>9  :0@B>9< / l i n k >   8  < l i n k = " t o p i c : l i n e   o f   s i g h t " > ;8=859  273;O40< / l i n k > . 
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