L🇷
он прикрепляет первый аргумент (елемент) к списку во втором аргументе и возвращяет получившийся список
Scheme Procedure: cons* arg1 arg2 …https://www.gnu.org/software/guile/manual/html_node/List-Constructors.html#index-cons_002a
Like list, but the last arg provides the tail of the constructed list, returning (cons arg1 (cons arg2 (cons … argn))). Requires at least one argument. If given one argument, that argument is returned as result. This function is called list* in some other Schemes and in Common LISP.