size of default preview screen.

I just cant now find how to move the menu bar
Any clues ??

Found it . Cunningly hidden.
I can move the taskbar on desktop to the left , but still will not appear/ popup in the Gmoccappy window.
Not a great position fo mrading date etc

Moving your Desktop menu bar depends on which desktop environment you are using (eg cinnamon, plasma, xfce ....)

If you don't know, open a terminal and run:

echo $XDG_CURRENT_DESKTOP


Maybe that will help to find a solution.

[edit]
Too late.

On my mill I have to run gmoccapy in full screen mode and cannot get at the menu bar either. I switch to another Workspace by pressing Ctrl+Alt+Cursor. But this might depend on your desktop environment.

Seems i am running "Mate"
Now you say to use control + alt + cursor ? I am not aware that I have a cursor key
How do I get one ?

I meant cursor LEFT / RIGHT also known as arrow keys just give it a try and see what happens

ctrl/alt /Back arrow takes me back to a black screen which awaits my password
Seems mad to have to give password to quit but heyho ?

ctrl/alt/ arrow right takes me there directly but on trying to return via the icon I am told linux is still running do I want to restart it ?
I dont cos I will need to rehome and I dont want to lose settings I have put in. but if I select no it wont go back to EML screen

So after much messing about I discover that control / alt / cursor right takes me back to desktop directly. Ctrl/alt/ cursor left brings me back to my program screen.
I now get what you were trying to tell me Aciera . Does Linux cnc do anything in a straightforward way???????

Sometimes the bug is in the communication.
Glad you got it working.

I think my problem is being so inexperienced with linux, and those who are experienced expect me to be quicker on the uptake .
It is hard learning to walk when everyone else is running.