Program Single Block Mode

It would be nice to see an addition of a 'single block' mode, similarly to CNC machines where you can step through each line/block of code one at a time. This would be good for proving out program or certain sections of programs. This would be better than having to CTRL+E each line to make sure things dont crash.

Adding a single block toggle to the execution popup window while executing would have the user click the play button/green button on the jogbox to advance each block.