HP 83751A Programming Manual page 144

Marker Subsystem
Usage of the <n> in MARKER headers
A single digit may be appended to any of the MARKER headers, as shown
in the commands. This specifies which of the 10 markers (0 to 9) is being
altered. ln some cases, the function is global to all 10 markers and is not
really something that is an attribute of a single marker, such as amplitude
markers. Either markers are all amplitude markers or none of them are.
programmer and ignored.
MARKer[n]:AMPLitude
MARKer[n]:AMPLitude ONlOFFlllO
MARKer [ n] : AMPLitude?
Sets and queries the amplitude marker ON/OFF switch. While [n] may be
used, there is really only a single switch for all the markers.
When MARKer Cnl : AMPLitude [ : STATE] ON the front panel display
message is Marker=Amplitude.
When MARKer [n] : AMPLitude [ : STATE] OFF the front panel display
message is Marker=Intensity.
*RST value is OFF or Marker=lntensity.
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