The primary output method for XSTAR is via FITS files. The Interactive Data Language (IDL) has a number of routines designed for reading data from FITS files (see http://idlastro.gsfc.nasa.gov). In addition, the program FV supported by the HEASARC provides viewing and plotting capabilities of FITS data. The CFITSIO package provides additional support to read FITS files in both C and Fortran programming languages. Information on these packages is available through the `Software' link on the HEASARC home page (http://heasarc.gsfc.nasa.gov/).