limits of Circle spells

[OneShot]

The last of the many times we had the effect of T:Circle in 3D is tmk here:

@David_Chart

Circles and Rings in Three Dimensions

The standard Ars Magica rules use an intuitive definition of "inside the circle" for Circle Targets and Ring Durations. A person standing in the centre of a 1 pace diameter circle is inside the circle; someone who happens to be standing directly above it three floors higher is not. If your troupe need something more precise, you can work something out, and it should not break anything in the rules. Bear in mind, however, that it will still come down to the troupe's decision on whether a thing is within the more precisely defined volume.

It didn't make it into the errata from August 2021.