FIO_CLOSE
Close a sequential file
FIO_FNAME
Get the full file name of a file
FIO_OPEN
Create/open a sequential file
FIO_READ
Read sequential record
FIO_READF
Fast read sequential record
FIO_RWIND
Rewind a sequential file
FIO_UNIT
Get a unit number given a file descriptor
FIO_WRITE
Write a sequential record
RIO_CLOSE
Close a direct access file
RIO_OPEN
Open a direct access file
RIO_READ
Read record from direct access file
RIO_WRITE
Write a record to a direct access file
FIO/RIO FORTRAN file I/O routines