1 OPEN 2+ , 2 %options-group 3 ; 4 %options-group: 5 FILE(file-reference) 6! STREAM 6? 6 RECORD 7! INPUT 7? 7 OUTPUT 7 UPDATE 8! SEQUENTIAL 8.1! BUFFERED 8.1? 8.1 UNBUFFERED 8? 8 DIRECT 8.1! UNBUFFERED 8.1? 8.1 BUFFERED 9? KEYED 10? PRINT 11? TITLE(expression) 12? LINESIZE(expression) 13? PAGESIZE(expression)