Direct Matrix Abstraction Program (DMAP) is a unique Nastran programming capability available as an add-on to the Femap with NX Nastran base module that allows customers to expand NX Nastran capabilities by writing their own applications and installing custom modules. DMAP can be used to compute additional measures of structural response; to transfer intermediate data to and from NX Nastran (for example, externally generated system matrices); to incorporate the latest software enhancements without waiting for a major software release; or to access more than just the standard results output sets.