## 10.5.19 SEQUENTIAL Specifier

The SEQUENTIAL specifier asks whether a file is connected for sequential access. It takes the following form:

    SEQUENTIAL = seq

seq
  Is a character scalar memory reference that is assigned one of the following values:

  - 'YES': If sequential access is allowed for the specified file

  - 'NO': If sequential access is not allowed

  - 'UNKNOWN': If the processor cannot determine whether sequential access is allowed

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