Printing w/tubes

[Erin Lynch]

I'd like to output a high resolution (or vector) image of a cave with
passage tubes. Is there any way to increase the "screenshot" 
resolution in aven?  The current resolution isn't high enough for
use in publications.

Failing that, are there any development versions which have an option
of printing the centreline with the passage tubes filled in?  I could print
that to a pdf and then use it as a "black blob" survey.

Cheers,
Erin