List of identifiers of the Syntheto built-in functions.
This is an initial selection, which may change in the future.
Definition:
(defconst *builtin-function-names* (list (identifier "empty") (identifier "add") (identifier "append") (identifier "length") (identifier "is_empty") (identifier "first") (identifier "last") (identifier "rest") (identifier "member") (identifier "remove_first")))