I was unable to find, by searching this forum, much about arcs, specifically as it relates to the following questions.

1. Is it possible to constrain arc drawing, to a particular 3d plane in the 3d view port?

2. Is it possible to rotate an arc, onces its drawn, about an axis?

3. How do I draw the RED arc when its not constrained by one of the Orthographic projections, as illustrated in the attached pic.?

p.s. the cube in this pic is basically a skeletal reference for positioning the existing arcs, similar to what you refer to in the Moi command reference, under the topic, Construction lines.