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 |  | 
 | <html> | 
 |     <head> | 
 |         <meta charset="utf-8"> | 
 |         <script src="lib/simpleRequire.js"></script> | 
 |         <script src="lib/config.js"></script> | 
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 |     <body> | 
 |         <style> | 
 |             html, body, #main { | 
 |                 width: 100%; | 
 |                 height: 100%; | 
 |                 /* background-image: url(old_mathematics.png); */ | 
 |                 /* background-repeat: repeat; */ | 
 |             } | 
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 |         <div id="main"></div> | 
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 |  | 
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 |                     // renderer: 'svg' | 
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 |     </body> | 
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