Some more thinking to do, too late for now....
EDIT: So here is my findings... Using: 1.1.13-p2
It seems that if a .svg file drawing has a very thin line, it disappears, and doesn
t show in uArmStudio at all when imported as vector graphics (only option). Also if size of the drawing object is small, it doesnt show. I created a rectangle with a size of 15x4 cm, exported it as .SVG (in LibreOffice Draw), with line thickness about 5mm. Only then that picture appeared visible in Studio. I guess the problem arises from the fact that Studio scales everything down to some size???, that fits in between lines like B and C. If original line thickness is too thin, it disappears completely. In my case 5mm line scaled down to abt. 1,2-1,3mm. If this is true, a 1mm line would go down to 0,25-0,3mm, or smaller.
Now here is a test result: Anything smaller than 3mm in my drawing, won
t give printout. It shows as a very thin hairline in studio, but laser doesnt start. A 3mm line scales down to 0,4-0,5mm, only then the pattern is somewhat like as in the original draving (15x4cm, line thickness 3mm). 3mm scales down to 0,4-0,5mm means that it is 1/6 of the original thickness.
The fact that Studio treats <3mm hairlines as fly`s shit, it won`t show or print it at all... Correct me if if I am wrong!
And still this vector graphics file is treated as B/W graphics file, it`s drawn line by line, and each line has a gap to the next one. I would like to see a way to burn inline drawings, not just grabby graphics!