305447
PLIB includes sound effects , music , a complete 3D engine , font rendering , a simple windowing library , a game scripting language , a GUI , networking , 3D math library and a collection of utility functions .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None