#2 Scaling problems

[Christian Stehno]

If I use the output from Jastex in combination with a
different unitlength, the result is cluttered. This is
due to a problem of GasTeX to not scale elements with
missing width and height settings.
I would suggest that you add to the export the Nw and
Nh attributes always, just to have the result to scale
correctly. If you care about extra space, you could
make this export feature optionally disabled.