Format Identifier

f is a format identifier and can be:

• An asterisk (*), indicating list-directed I/O. See "List-Directed I/O " for more information.

• The label of a FORMAT statement that appears in the same program unit

• An integer variable name that has been assigned the label of a FORMAT statement that appears in the same program unit

• A character expression or integer array that specifies the format string. This is called a runtime format or a variable format. The integer array is nonstandard. @

See "Runtime Formats " for details on formats evaluated at runtime.

If the optional characters, FMT=, are omitted from the format specifier, then f must appear as the second argument for a formatted write; otherwise, it must not appear at all.

f must not be an asterisk for direct access.

f can be an asterisk for internal files. @

If a file is connected for formatted I/O, unformatted data transfer is prohibited, and vice versa.