It says edited by tobyaxis at the bottom.
To reply to your post:
Incremental/Absolute Coordinate Positioning
I'm not sure how to do this myself yet due to not needing it yet.
The Templates in the Editor:
In plain terms it is a description of what type and configuration of Milling/Turning Machine you have. Axis Configurations, CNC Control, 2 or 3 Axis, Rotation of 4th Axis etc.
We have found that we shouldn't change the present settings or there are errors.
I'll look into the G90/G91 settings and post back the results.