OPEN
CLOSE
INQUIRE -- file or unit
INQUIRE -- input/output list
BACKSPACE
REWIND
ENDFILE
READ -- sequential formatted
READ -- internal
READ -- namelist
READ -- sequential unformatted
READ -- direct formatted
READ -- direct unformatted
WRITE -- sequential formatted
WRITE -- internal
WRITE -- namelist
WRITE -- sequential unformatted
WRITE -- direct formatted
WRITE -- direct unformatted
FORMAT edit descriptors
FORMAT control descriptors
Business Editing
Other Extensions
Execution errors and IOSTAT values