I made in KWrite file : IN;PU0,40;PD40,40;PD40,0;PD0,0;PD0,40;PD0,40;PU; .
It gives rectangle 1,1x1,1 mm in Inkscape.
This 0,1 mm is from "simplification threshold")and is another problem.
Now :
1. open .plt and save .plt - makes no diffrent in scale.
2. open .svg or new and save as .plt - gives hpgl unit 1/50 not 1/40 mm.
1 mm is 40 hpgl units of course.
I made in KWrite file : IN;PU0, 40;PD40, 40;PD40, 0;PD0,0; PD0,40; PD0,40; PU; .
It gives rectangle 1,1x1,1 mm in Inkscape.
This 0,1 mm is from "simplification threshold")and is another problem.
Now :
1. open .plt and save .plt - makes no diffrent in scale.
2. open .svg or new and save as .plt - gives hpgl unit 1/50 not 1/40 mm.
Some works, some works not ...