NeXtMidas supports six generic file types. Each generic file type is associated with a Type Class, which covers a range of file type numbers:
Type Type Class Numbers Generic Structure 1000 1000-1999 Homogeneous one-dimensional data 2000 2000-2999 Homogeneous two-dimensional data 3000 3000-3999 Fixed-length, fixed-format record data 4000 4000-4999 Multiple key=value records, non-flat database files 5000 5000-5999 Record-oriented systems modeling data structure 6000 6000-6999 Extended Type 3000 format for flat database files