What does Optifine do for Minecraft?

Related questions

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2. What is FastCraft mod?
3. Is Fastcraft client side?
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5. What can OptiFine do?
6. How do I zoom in with OptiFine?
7. What does a JAR file contain?
8. How much RAM should I dedicate to Minecraft?
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Tags

1. #optifine
2. #player
3. #download
4. #significant
5. #graphics
6. #improve
7. #smooth
8. #gaming
9. #performance
10. #introduced
11. #minecraft
12. #boost
13. #magic
14. #launcher
15. #ability
16. #offers
17. #playing