VERY simple screen idea.....

[Darc]

Is it possible to have 1 program only on a screen set, for example let's say it was being used on a machine that always does the same function, like a cut off machine.
The only variable would be the material Ø.
Is it possible to have the program in the background so when I enter in the size and press start it will use this Ø in the hidden program?(see pic)