Optional information associated to an atc call in the table of atc calls.
(atc-maybe-call-infop x) → *
Function:
(defun atc-maybe-call-infop (x) (declare (xargs :guard t)) (let ((__function__ 'atc-maybe-call-infop)) (declare (ignorable __function__)) (or (atc-call-infop x) (eq x nil))))