Fprint line thickness

[Domingos Fernandes Urbano Neto <dfurbano@xxxxxxxxx>]

Hi Ferrets,

I'm using 

>> Fprint -p portrait -l cps -o 'filename'.ps 'filename'.plt

to generate my color ps files, but doesn't matter if my lines are
thick or not, the ps has the same thickness ever. What am I doing wrong?

Thanks,

Domingos.