The marker coupling feature enables/disables coupling of markers with the same numbers on different traces. If the feature is turned on, the markers with the same numbers will move along the X-axis synchronously on all the traces. If the coupling feature is off, the position of the markers with same numbers along X-axis will be independent (See figure below).

Marker Coupling Feature
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 | To enable/disable the marker coupling feature, use the following softkeys: Markers > Properties > Marker Couple | 
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