Screen like Mach

I do not know how to translate that would explain. if the g-code knows then the characters "J" and "K"
Can I help improve the quality?

head around, I like this program

Yes, Linuxcnc can use J and K arcs.
linuxcnc.org/docs/html/gcode/g-code.html#gcode:g2-g3

Actually the cam program I use does not use K, so the majority of the g-code I run on the carving machines doesn't have any arcs and is all done with short line segments.

through glade I can add to the standard axis change

did not work that way
forum.linuxcnc.org/10-advanced-configura...onality?limitstart=0

Not sure I understand your question.
The standard Axis usier interface can be augmented by Glade panels, by adding tabs to the display window or an extra pannel to the right but you can not use it to change the existing user interface.

If you want to use Glade to edit the user interface (not just create a VCP), you will need to start with one of the Glade based user interfaces such as Gscreen or Gmoccapy.