const file_info *find(const filename &to_check) const;
//!< locates the record of information for the filename "to_check".
/*!< do not modify the returned object. it contains the current state
- of the file in question. if the file wasn't in the list, then NIL is
+ of the file in question. if the file wasn't in the list, then NULL_POINTER is
returned. */
int locate(const filename &to_find) const;