Canon PIXMA MP250 - Manual (Page 511)

Enter Setting Name and click Add. The name appears in Tone Curve Settings List or Threshold
Settings List.
Click Save to save.
You can load and apply the saved tone curve/threshold settings to a preview image. To load the
settings, select the saved item from the pull-down menu.
To delete an item, select it in Tone Curve Settings List or Threshold Settings List and click Delete.
Click Save to save settings displayed in Tone Curve Settings List or Threshold Settings List.
Note
Save up to 20 items.
Defaults
Reset all adjustments (saturation/color balance, brightness/contrast, histogram and tone curve).
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Page 511 of 678 pages Color Adjustment Buttons