1 OPEN 2+ , 2 %options-group 3 ; options-group: 1 FILE(file-reference) 2! STREAM 2? 2 RECORD 3! INPUT 3? 3 OUTPUT 3 UPDATE 4! SEQUENTIAL 4.1! BUFFERED 4.1? 4.1 UNBUFFERED 4? 4 DIRECT 4.1! UNBUFFERED 4.1? 4.1 BUFFERED 5? KEYED 6? PRINT 7? TITLE(expression) 8? LINESIZE(expression) 9? PAGESIZE(expression)