Different formats of accessing files
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VFMT
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FMT
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UNFMT
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All of the above
File-Aid supports multiple file access formats: VFMT (Variable Format - files with variable-length records), FMT (Fixed Format - files with fixed-length records), and UNFMT (Unformatted - raw binary files). All three formats are valid access methods in File-Aid.
Mainframe file access commonly distinguishes between formatted (FMT), unformatted (UNFMT), and variable-format (VFMT) record layouts depending on how the data is structured and interpreted by the accessing program. Since all three represent valid, distinct ways files can be accessed/formatted, 'All of the above' correctly captures that the listed formats aren't mutually exclusive alternatives but a set of recognized options.