Thank you everyone for the comments. I'll need to digest everything and get it into my head. Take care.

I'm new to RepRap firmware so am confused about how it handles z height.

In config.g is this line which sets the machine z maximum:

M208 X203.5 Y200 Z215 S0		; set axis maxima

And in homall.g is this line:

G92 Z215						; set Z position to axis maximum (you may want to adjust this)

And in homez.g is the same line:

G92 Z215						; set Z position to axis maximum (you may want to adjust this)

I have some questions.

1. Why must/can z be specified in three places?
2. Must z be the same in each gcode file?
3. What will happen if the z were different in one or more files?

It would seem better to me to set z in only place. Why not set it in one place like Marlin?

KISSlicer and sometimes the Prusa version of Slic3r.

Is there a way to alter the position of the origin pointers in the height map? My machine has its origin at the front left corner and the height map shows this at the rear. I rotate the scene so the origin is at front but would rather not have to. Sorry if this has been addressed; I could not find it.

@Phaedrux Thank you!

@CCS86 Do the devs see posts such as this or maybe I should also request the feature?

@Phaedrux Thank you. Because I have a disability I am not good at precisely dragging the slider; I do it - but it would be MUCH easier clicking the button.

Thank you for helping. I am using Duet Web Control 2.1.7. Right-clicking doesn't bring up options other than these. I would have thought this would be configurable the same as Babystepping.

When I click the - or + button in Extrusion Factors in the DWC the jump is 5% either way. This is too large usually. Is there a place I can I set the amount the buttons increase or decrease the extrusion rate? Thank you.