Serializeval base_directory : string Prelude.refval type_to_file_name : incremental_data_kind -> stringval load_data : incremental_data_kind -> 'aLoads data for incremntal runs from the appropriate file
val store_data : 'a -> incremental_data_kind -> unitStores data for future incremental runs at the appropriate file, given the data and what kind of data it is.