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readme.md

@@ -50,6 +50,7 @@ Note that many of these tricks are currently (2023 Aug 11) impossible to reprodu
 5. The parameters of samplers are carefully tuned.
 6. Because XL uses positional encoding for generating resolution, images generated by several fixed resolutions look a bit better than that from arbitrary resolutions. This suggests that resolutions in UI may be hard coded for better results.
 7. Separated prompts for two different text encoders seem unnecessary. Separated prompts for base model and refiner may work but the effects are random, and we refrain from implement this.
+8. DPM family seems well-suited for XL, since XL sometimes generates overly smooth texture but DPM family sometimes generate overly dense detail in texture. Their joint effect looks neutral and appealing to human perception.
 
 ## Thanks