How do you delete an item in screen 4?

Having wrongly placed a LED on screen I cannot find a delete facility. The Cut button is greyed out.

click on the button or led on the screen then press the Delete button on the keyboard. That should do it...

Many thanks, ........ having sorted the LED out I find that when mach3 starts the LED does not show. When the button is pressed to which the LED relates then it does show and subsequent presses will make it turn off and on correctly.

So why does it not show on initial screen load do you think?

The Led is associated with the jog on/off button being placed on a new screen.

That is a problem that Art is going to have to fix a t some point... It is nothing that you did.