Data Set Options under UNIX

FILECLOSE= Data Set Option: UNIX

Specifies how a tape is positioned when a SAS data set is closed.

Default:	REREAD
Valid in:	DATA step and PROC steps
Category:	Miscellaneous
Engines:	V9TAPE, V8TAPE, V7TAPE, V6TAPE
UNIX specifics:	list of valid values
See:	FILECLOSE= Data Set Option in SAS Language Reference: Dictionary

FILECLOSE= FREE | LEAVE | REREAD | REWIND

FREE: rewinds and dismounts the tape. If the device cannot dismount the tape, then the tape will be rewound only.
LEAVE: positions the tape at the end of the file that was just processed. Use FILECLOSE=LEAVE if you are not repeatedly accessing the same files in a SAS program, but you are accessing one or more subsequent SAS files on the same tape.
REREAD: positions the tape volume at the beginning of the file that was just processed. Use FILECLOSE=REREAD if you are accessing the same SAS data set on tape several times in a SAS program.
REWIND: rewinds the tape volume to the beginning. Use FILECLOSE=REWIND if you are accessing one or more previous SAS files on the same tape, but you are not repeatedly accessing the same files in a SAS program.