"TYPE-SINGLE-VALUE-P" "TYPE-SPECIFIER" "TYPE-UNION"
"TYPE/=" "TYPE=" "TYPES-EQUAL-OR-INTERSECT"
"UNBOUND-SYMBOL-ERROR" "UNBOXED-ARRAY"
- "UNDEFINED-FUN-ERROR" "UNION-TYPE" "UNION-TYPE-P"
+ "UNDEFINED-FUN-ERROR" "UNDEFINED-ALIEN-FUN-ERROR"
+ "UNION-TYPE" "UNION-TYPE-P"
"UNION-TYPE-TYPES" "UNKNOWN-ERROR"
"UNKNOWN-KEY-ARG-ERROR" "UNKNOWN-TYPE" "UNKNOWN-TYPE-P"
"UNKNOWN-TYPE-SPECIFIER" "UNSEEN-THROW-TAG-ERROR"