Recognizer for input-section-option structures.
(input-section-optionp x) → *
Function:
(defun input-section-optionp (x) (declare (xargs :guard t)) (let ((__function__ 'input-section-optionp)) (declare (ignorable __function__)) (cond ((not x) (b* nil t)) (t (b* ((fty::val x)) (input-sectionp fty::val))))))