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Another regular columnist , using the pen-name of " Hac-Man " ( in reference to Pac-Man ) set out cheats and compatibility fixes for popular arcade - style games , in the form of pokes or short type-in programs .
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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:
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