OVERLAY-SPECTRUM

Overplot the current spectrum on an already open plot file. Generates an error if no plot file open. If a graphics terminal is selected as the plot device then it sends the current plot to the screen - otherwise it is just stored up, waiting for a CLOSE-PLOT or SEE-PLOT command.

Relevant flags:

HISTOGRAM	L4	Plot spectrum as histogram if TRUE, join-the-dots otherwise.
INTERACTIVE	L4	Enter 1-D interactive graphics mode when plot is done.
LINE_WEIGHT	I4	Default line weight for plotting axes, labels etc.

Examples:

    >> overlay-spectrum<CR>
    Line weight for plots? [1] 2 <CR>