LPLOT

        [WEEDS\]LPLOT [NCHAN]

    Plot the line from the current line index (built from the last  FINDLINE
    command). A vertical line is drawn at the rest frequency of the line. An
    optional NCHAN parameter may be given to define the  frequency  interval
    to  be plotted around the line, expressed in number of channels (default
    100)

    Arguments:
        NCHAN     the frequency interval to be plotted, in channels (default
    100)