Display Preferences
Adjust display options:

User Interface Zoom
Use the User Interface Zoom Slider, or manually enter a zoom value, to shrink or magnify the on-screen display.
Default: 89%
Region Intensity Histogram Overlay mode
Manage how pixels within overlays are used in region intensity histograms.
- One per overlay - separate data sets
- Group overlays - combine overlays into single data set
Default: One per overlay
Note that some changes made in preferences will not take effect until the application has been restarted.