select /omit field

In System/38, a field in a logical file record format whose value is compared with a constant,the contents of another field, a range of values, or a list of values to determine whether a record is to be omitted from the access path of the logical file or selected for use by the logical file.; 在IBM System/38中,邏輯文件記錄格式中的一種字段,其值與某一常數、另一字段的內容、值的一個范圍或一值表相比較,以決定該記錄是否從邏輯文件的存取路徑中省略,或選出供邏輯文件使用。