Set Marker

Sets the marker array.
Format:
SPECTRA> set mar$*$ker [val1 [val2...]]
SPECTRA> set/add mar$*$ker [val3 [val4...]]

Description:
If no values are given, the marker array is cleared. The array can be inspected by show marker.

If the qualifier /add is supplied, the values are appended to the marker array.