How to draw "point graphs"?

[Perrone Alessandro]

Hi all
 In one model I am programming, I'd like to plot some ghraphs, but 
instead of line graphs,  "point graphs".
Is it possible with Swarm or I have to program myself the class using 
tcl/tk library?
Regards.
                                ALEX
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  .oooO             Alex Perrone - address@hidden address@hidden
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