READ - 形式 2 - 順次検索 / 動的アクセス

1 READ ファイル名
2 NEXT
2 FIRST (1) 
2 LAST (1) 
2 PRIOR (1) 
3? RECORD
4? INTO ID-1
5? WITH
5.1 NO LOCK (1) 
6? FORMAT (1) 
6.1? IS
6.2 ID-2
6.2 リテラル-1
7? NULL-KEY-MAP (1) 
7.1? IS
7.2 ID-5
8? NULL-MAP (1) 
8.1? IS
8.2 ID-6
9? AT
9.1 END 命令ステートメント-1
10? NOT
10.1? AT
10.2 END 命令ステートメント-2
11? END-READ