Unfortuately I don´t know, how to write to the documentation

Hmm, no feedback...
Looks like nobody from kstars is interested in my project. No problem, let´s forget about it.

changed URL

https://docs.kde.org/?application=kstars looks fine, because I can choose my preferred language.

They are new lines. I paint the constellations in another way than common. Look here for an example: https://sternenkarten.com/zwischenspiele/sternbilder-malen/
The first picture show ursa major, painted in western style
The second picture show ursa major, how I paint the lines.