There’s an error in the documentation on the site for the groupbox widget and the identifier linethickness
It’s written linethickess instead of linethickness.
n is missing
Groupbox + linethickness
Thanks @tharos I’ll fix this and push to git, but I won’t be able to serve it until I return home after the holidays.
I also noticed that linethickness is not declared in CsoundKeywords (CabbageIds.h).
That’s why the keyword is not recognized in red color in the editor
Thanks, Fixed now in GIT.