CAF treatment needs more Notes
While working on #18079 (closed) I wanted to refer to a Note which outlined the overall dataflow for CAFfyness information. Unfortunately, it doesn't seem one exists. !1304 (merged) does update
Note [SRTs] with some details regarding to specifics of computing CAFfyness, but it silent on the matter of how this information makes it into the interface file. This could use more discussion.