S t r i n g R e a d e r   s r   =   n e w   S t r i n g R e a d e r ( @ " 
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 X m l T e x t R e a d e r   x r   =   n e w   X m l T e x t R e a d e r ( s r ) ; 
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 C a n v a s   t r e e   =   ( C a n v a s )   X a m l R e a d e r . L o a d ( x r ) ; 
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