Hi,
I found inkscape the best open gfx app.
All the more gelastic it was that it's not possible
to draw the popular black line of 1px width in true
plain black color without having to load an extension
(pixelsnap) which did not function in my poor case.
Could we have both the smoothness
(?anti-aliasing or underlying between-pixels grid?)
and the crispyness optionally available.