Help xgraph style changing

[Arun J M <AJ7663@tntech.edu>]

Dear ns-users,

I have a problem in setting the xgraph line styles using Tcl script.

I want to set the main data points to less denser style so that other
miscellaneous points corresponding to rarer events, such as packet drops, can be
plotted using thicker line styles. Otherwise they frequently merge in the main
data points, black and white print outs.

As I read in the xgraph man page, styles can be set using <digit>.style
in the data set, where digit is between 0 and 7. 

If there is a way to set the line style using tcl, for example the "finish file" procedure
in tests/misc.tcl in ns-1.4 distribution, please reply with a few Tcl sentences
or point to a place that I can immediately look in. 

Hoping for a quick response,
Thank you,
Sincerely,
J.M.Arun