     "QUALIFIED-WITH:" "QUALIFIED:"
     "read-only" "RENAME:" "REQUIRE:"  "REQUIRES:"
     "SINGLETON:" "SINGLETONS:" "SLOT:" "SPECIALIZED-ARRAY:"
-    "SPECIALIZED-ARRAYS:" "STRING:" "SYMBOLS:" "SYNTAX:"
+    "SPECIALIZED-ARRAYS:" "STRING:" "SYNTAX:"
     "TYPEDEF:" "TYPED:" "TYPED::"
     "UNIFORM-TUPLE:" "UNION:" "USE:"
     "VARIANT:" "VERTEX-FORMAT:"))

(defconst factor-alias-definition-regex
  "^ALIAS: +\\(\\_<.+?\\_>\\) +\\(\\_<.+?\\_>\\)")

(defconst factor-vocab-ref-regex
  (factor-second-word-regex
   '("IN:" "USE:" "EXCLUDE:" "QUALIFIED:" "QUALIFIED-WITH:")))

(defconst factor-using-lines-regex "^\\(USING\\):[ \n]+\\([^;\t]*\\);")

(defconst factor-int-constant-def-regex
  (factor-second-word-regex '("ALIEN:" "CHAR:" "NAN:")))


(defconst factor-setter-regex
  "\\_<>>\\(?:\\sw\\|\\s_\\)+\\_>")

(defconst factor-stack-effect-regex
  "\\( ( [^)]* )\\)\\|\\( (( [^)]* ))\\)")
