FMS stores data in Vector, Submatrix and Matrix Files. A File Attribute List is used to store critical information for each file type, including unit numbers, record sizes, number of records and data type. The File Attribute Lists are passed to FMS subroutines to perform operations on the stored data.

The following table contains links to descriptions of each file type and their File Attribute Lists:

FMS Files
File Type File Attribute List
Vector Files Vector File Attribute List
Submatrix Files Submatrix File Attribute List
Matrix Files Matrix File Attribute List