type multiplier = | One| Zero_or_more| One_or_more| Optional| Repeat of int * int option| Repeat_by_comma of int * int option| At_least_one
type terminal = | Delim of string| Keyword of string| Data_type of string| Property_type of string
type combinator = | Static| And| Or| Xor
val string_of_value : Css_spec_parser__.Ast.value -> stringval value_of_string : string -> Css_spec_parser__.Ast.value option