Before Smith charts, my gnuplots were smaller by gif than png,
and I did not think to recheck.
OK, gnuplot Smith chart is slightly smaller by gif than png on my Windows PC,
but gif takes a disturbingly long time to generate, so updated:
.. with a small 'png.p' gnuplot script
for generating "gnuplot.png" from current plot
(remember to rename it so not overwritten by next 'png.p' invocation)
and added Roman's improvements to 'smithlabel.p'
Oristo
