val pp : Stdlib.Format.formatter -> t -> unitSerialize a S-expression using indentation to improve readability
val pp_split_strings : Stdlib.Format.formatter -> t -> unitSame as pp ~syntax:Dune, but split long strings. The formatter must have been prepared with prepare_formatter.
val prepare_formatter : Stdlib.Format.formatter -> unitPrepare a formatter for pp_split_strings. Additionaly the formatter escape newlines when the tags "makefile-action" or "makefile-stuff" are active.