Hi, Kovid!
Yep, yep. Alright. Thanks for giving it a look.

Hi, theducks!
No, not DRM. A way to not have to go back every time you copy across where there's a page break and then not need to go back and excise out the headers and/or footers.
So that, instead of
Sides DJ and HE, and by the transverse Line FG distinguished into two halfs, the one DG of an intensely blue Colour, the other FE of an intensely red. And BACcab represents the Prism whose refracting Planes ABba and ACca meet in the Edge of the refracting Angle Aa. This
Newton Optiks PROPOSITIONS. PROP. I. Theor. I. 19 Edge Aa being upward, is parallel both to the Horizon, and to the Parallel-Edges of the Paper DJ and HE, and the transverse Line FG is perpendicular to the Plane of the Window. And de represents the Image of the Paper seen by Refraction
you'd get:
Sides DJ and HE, and by the transverse Line FG distinguished into two halfs, the one DG of an intensely blue Colour, the other FE of an intensely red. And BACcab represents the Prism whose refracting Planes ABba and ACca meet in the Edge of the refracting Angle Aa. This Edge Aa being upward, is parallel both to the Horizon, and to the Parallel-Edges of the Paper DJ and HE, and the transverse Line FG is perpendicular to the Plane of the Window. And de represents the Image of the Paper seen by Refraction
You wrote,
MAKE YOUR HEADERS AN IMAGE
That's what I was thinking of. Some way to get this step
https://ibb.co/K0WFHfz
to create itself as an image, or as being otherwise unselectable.