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• Orientation - These menu items allow the orientation to be set to either "Portrait" or "Landscape".  The coordinates of the markers will be updated to match the new orientation, as will the size of the viewing area.
• Zoom  - These menu items duplicate the functionality of the zoom buttons on the control panel.
• Markers/ROI - The "Set Marker 1" through "Set Marker 4" items allow the setting of the on-screen markers by clicking in the main display.  The "Set ROI" item allows the setting of the region of interest by clicking and dragging on the main display.  The "Reset ROI" item will change the region of interest to the full image, and the "Reset Markers" item will position the four on-screen markers near the four corners of the image, slightly off-screen.
• Droplet - The viewer ROI can be set from either of the droplet finder ROIs using "Set ROI from Droplet ROI 1" or  "Set ROI from Droplet ROI 2".  The droplet finder ROIs can be set from the current viewer ROI using either "Set Droplet ROI 1" or "Set Droplet ROI 2".  A dialog to adjust the droplet finder noise floors is started using "Adjust Noise Floors".  Finally, the "Show Droplet Locations" menu item continually sets the positions of markers 1 and 2 from the droplet finder outputs.

6. Information Area

The information area contains:

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