# :MARKer Manual Line Marker Commands

:MARKer Manual-Line Commands

- :MARKer:X:POSition
- :MARKer:X:STATe
- :MARKer:Y:POSition
- :MARKer:Y:STATe
- :MARKer:REFerence

Manual line markers should be used on eye diagrams (multi-valued waveforms). Manual line markers measure the position or magnitude of any location on the display and not just a point on a waveform. Although manual line markers can be used (in the Waveform, Time-Ohms, Time-Volts, and Time-% waveform content windows only) they are of minimal value. Instead, use tracking markers. Manual line markers can never be placed on Decibels (Hz), Degrees (Hz), or Seconds (Hz) waveform content windows in any measurement mode.