string1 string2 file file                   open file identified by string1
                                            with access string2

file closefile -                            close file

file read (int true) or (false)             read one character from file

file int write -                            write one character to file

file string readhexstring substring bool    read hex from file into string

file string writehexstring -                write string to file as hex

file string readstring substring bool       read string from file

file string writestring -                   write characters of string to file

file string readline substring bool         read  line from file into string

file token (token true) or (false)          read token from file

file bytesavailable int                     number of bytes available to read

- flush -                                   send buffered data to stdout file

file flushfile -                            send buffered data or read to EOF

file resetfile -                            discard buffered characters

file status bool                            return status of file

* stringname status (pages bytes access         returns status information
creation true) or if file-not-found (false)     for a file

string run -                                execute contents of named file

- currentfile file                          return file currently being
                                            executed

string print -                              write characters of string to
                                            stdout file

any = -                                     write text representation of any
                                            to standard output file

 | any1..anyn stack  |  any1..anyn          print stack nondestructively
                                            using =

any == -                                    write syntactic representation of
                                            any to standard output file

 | any1..anyn pstack   | any1..anyn         print stack nondestructively
                                            using ==

- prompt -                                  executed when ready for
                                            interactive input

bool echo -                                 turn on/off echoing