Time Format: RX's time ruler and playhead location counter can be set to show different time values.
Decimal - Shows time in hours, minutes, seconds and fractions of seconds
Samples - Shows time by the number of individual samples
Frames - Shows time by frames
Set Frame Rate - This will take you to the Preferences menu, where you can set the frame rate for the current file.
Effect Overlays: This allows you to turn on/off special display features for the Declipper and Spectral repair modules. For an overlay to be visible, you need to have the option selected in the view menu, and the corresponding effect UI needs to be open.
Declipper Threshold - When the waveform is visible, the threshold settings appear as red lines within the display.
Spectral Repair Source Regions - When this feature is selected the surrounding region is displayed as a dotted line. Changing settings like Surrounding Region Length or Before/After Weighting will have a visible effect so you can see how those controls work. The surrounding region is the area that RX uses for interpolation of the selected region. The data from the surrounding region is used to restore the selected region.