-;;; 8. a list of the &AUX specifiers;
-;;; 9. true if a &MORE arg was specified;
-;;; 10. the &MORE context var;
-;;; 11. the &MORE count var.
+;;; 8. true if any &AUX is present (new in SBCL vs. CMU CL);
+;;; 9. a list of the &AUX specifiers;
+;;; 10. true if a &MORE arg was specified;
+;;; 11. the &MORE context var;
+;;; 12. the &MORE count var;
+;;; 13. true if any lambda list keyword is present (only for
+;;; PARSE-LAMBDA-LIST-LIKE-THING).