Making progress with getting things understood and working.
How are these buttons supposed to work:
Set Zero: doesn’t seem to do anything, what is it supposed to do.
Check outline: does this trace the outline of the object on the pallet. I have a 6" line I am using for ramp testing loaded as DXF (the line images properly) and when I “Check outline” it moves along x ok then drives the head out of bounds in +Y till it slams the stops.
Set Zero: set current location as 0,0 / Check Outline will draw without fire a box around the loaded object(s)
@Ariel_Yahni_UniKpty Thanks a couple of follow ups:
So its likely that I set zero high on the Y axis and this is why “Check Outline” drove it off the safe area?
How do you reset the "set zero?
If your object is up at the top extreme will check outline drive into the stops?
Set the head to any location and press Set Zero, or home and set zero. I don’t believe check outline is checking the location to prevent it from going out of bounds
@Ariel_Yahni_UniKpty does “set zero” set 0,0 or home?
0,0. You could home somewhere else and have 0,0 in another . Example the K40 home at the top left but 0,0 is at the botto left
@Ariel_Yahni_UniKpty thanks again …
To be exact: Set Zero sets the work offset, not the machine zero point.
If you are on Grbl, you must set $10=0 to see work coordinates on the dro, otherwise you will not see any change in the dro, when doing a Set Zero.
Yes, we could do that, but this could cause problems if people are using their machines with multiple softwares.
But at least we should make the DRO switchable between MCO and WCO 
+Peter van der Walt That’s should be easy to do.
I was already thinking about a “firmware setup form” to help users config their firmware. Probably we can extend the Machine Profile?
Ok while we are here I have an annoyingly stupid question, what does MCO and WCO stand for …uggh! Machine coordinates, Workspace Coordinates…
Flagged this one as Documentation for now since there are some good bits of information that should probably be transferred over to the doc site. I see this question pretty regularly on both Laser and CNC groups.