The dash d command instructs plotl to use a dashed line (the dash length being defined by d) with equal mark and space for data curves.


The command nodash returns the data curve to the default, solid, line.


The command pair, mark dm and space ds determine the mark and space of a dash. For example, issuing the commands

    mark 0.1
    space 0.5

would cause data curves to be dashed with pend down for 0.1 inch, and pen up for 0.5 inch.