Single on Rigol at least seems to be a trigger mode, not a display mode, the other options being 'auto' and 'normal', both of which allow constant refreshes whe

Single on Rigol at least seems to be a trigger mode, not a display mode, the other options being 'auto' and 'normal', both of which allow constant refreshes when the trigger event re-occurs. This appears to be a distinct branch of evolution from the semantic interface etymology you reference.